Editing Cypress Hill (section)

===Focus on solo projects, ''IV'', crossover appeal with ''Skull & Bones'', and ''Stoned Raiders'' (1997–2002)===
[[File:Cypress Hill-mika.jpg|left|thumb|Germany 1998]]
In 1997, the members focused on their solo careers. DJ Muggs released ''[[Chapter 1 (Soul Assassins album)|Soul Assassins: Chapter 1]]'', with features  from [[Dr. Dre]], [[KRS-One]], [[Wyclef Jean]], and [[Mobb Deep]]. B-Real appeared with Busta Rhymes, [[Coolio]], [[LL Cool J]], and [[Method Man]] on "Hit 'Em High" from the multi-platinum ''[[Space Jam (soundtrack)|Space Jam Soundtrack]]''. He also appeared with [[RBX]], [[Nas]], and KRS-One on "East Coast Killer, West Coast Killer" from Dr. Dre's ''[[Dr. Dre Presents the Aftermath]]'' album, and contributed to an album entitled ''[[The Psycho Realm]]'' with [[Psycho Realm|the group of the same name]]. Sen Dog also released the ''Get Wood'' sampler as part of SX-10 on the label [[Flip Records (1994)|Flip Records]]. In addition, Eric Bobo contributed drums to various rock bands on their albums, such as [[311 (band)|311]] and [[Soulfly]].

In early 1998, Sen Dog returned to Cypress Hill. He cited his therapist and also his creative collaborations with the band SX-10 as catalysts for his rejoining. The quartet then embarked on the third annual Smokin' Grooves tour with [[Public Enemy (band)|Public Enemy]], Wyclef Jean, Busta Rhymes, and [[Gang Starr]].<ref name="SenMTV" /> Cypress Hill released ''[[IV (Cypress Hill album)|IV]]'' in October 1998 which went gold in the U.S. and peaked at No. 11 on the Billboard 200. The lead single off the album was "[[Dr. Greenthumb]]", as it peaked at No. 11 on the Hot Rap Tracks chart. It also peaked at No. 70 on the Billboard Hot 100, their last appearance on the chart to date. 

In 1999, Cypress Hill composed the soundtrack for the [[Personal computer|PC]] first-person shooter video game ''[[Kingpin: Life of Crime]]'', three of the band's songs from the 1998 ''IV'' album were in the game; "16 Men Till There's No Men Left", "Checkmate", and "Lightning Strikes".<ref>{{cite web|publisher=[[Discogs]]|url=https://www.discogs.com/release/8124304-Cypress-Hill-Kingpin-Life-Of-Crime?srsltid=AfmBOor6bRdUDt5kvzGryMacok6AXg0LA2O4RMiIV5BA4U7gerTcjNO4|date=1999|title=Kingpin: Life of Crime}}</ref> The group also did voice work for some of the game's characters. Also in 1999, the band released a greatest hits album in Spanish, ''[[Los Grandes Éxitos en Español]]''.

In 2000, Cypress Hill fused genres with their fifth album, ''[[Skull & Bones (album)|Skull & Bones]]'', which consisted of two discs. The first disc ''Skull'' was composed of rap tracks while ''Bones'' explored further the group's forays into rock. The album peaked at No. 5 on the Billboard 200 and at No. 3 on the Canadian Albums Chart, and the album was eventually certified platinum by the RIAA. The first two singles were "[[(Rock) Superstar]]" for rock radio and "[[(Rap) Superstar]]" for urban radio. Both singles received heavy airplay on both rock and urban radio, enabling Cypress Hill to crossover again. "(Rock) Superstar" peaked at No. 18 on the [[Modern Rock Tracks]] chart and "(Rap) Superstar" peaked at No. 43 on the Hot Rap Tracks chart.

Due to the rock genre's prominent appearance on ''Skull & Bones'', Cypress Hill employed the members of Sen Dog's band SX-10 as backing musicians for the live shows. Cypress Hill supported ''Skull & Bones'' by initially playing a summer tour with [[Limp Bizkit]] and [[Cold (band)|Cold]] called the Back 2 Basics Tour. The tour was controversial as it was sponsored by the [[file sharing]] service [[Napster]]. In addition, Napster enabled each show of the tour to be free to the fans, and no security guards were employed during the performances. After the tour's conclusion, the acts had not reported any disturbances.<ref>{{cite web|url=https://www.mtv.com/news/821372/napster-to-sponsor-free-tour-by-limp-bizkit-cypress-hill/|archive-url=https://web.archive.org/web/20160530091034/http://www.mtv.com/news/821372/napster-to-sponsor-free-tour-by-limp-bizkit-cypress-hill/|url-status=dead|archive-date=May 30, 2016|title=Napster To Sponsor Free Tour By Limp Bizkit, Cypress Hill|website=[[MTV]]|date=April 24, 2000}}</ref> Towards the end of 2000, Cypress Hill and [[MxPx]] landed a slot opening for [[The Offspring]] on the [[Conspiracy of One|Conspiracy of One Tour]]. The group also released ''[[Live at the Fillmore (Cypress Hill album)|Live at the Fillmore]]'', a concert disc recorded at San Francisco's [[The Fillmore]] in 2000. Cypress Hill continued their experimentation with rock on the ''[[Stoned Raiders]]'' album in 2001; however, its sales were a disappointment. The album peaked at No. 64 on the Billboard 200, the group's lowest position to that point. Also in 2001, the group made a cameo appearance as themselves in the film ''[[How High]]''. Cypress Hill then recorded the track "Just Another Victim" for [[WWE|WWF]] as a theme song for [[Tazz]], borrowing elements from the 2000 single "(Rock) Superstar". The song would later be featured on the compilation ''[[WWF Forceable Entry]]'' in March 2002, which peaked at No. 3 on the Billboard 200 and was certified gold by the RIAA.