Steven Bruce "Steve" Smith (born August 21, 1954) is an American drummer best known as a member of the rock band Journey, rejoining the group for the third time in 2015. "
Modern Drummer" magazine readers have voted him the #1 All-Around Drummer five years in a row.
 In 2001, the publication named Smith one of the Top 25 Drummers of All Time, and in 2002 he was voted into the Modern Drummer Hall of Fame.
 He was inducted into the Rock and Roll Hall of Fame as a member of Journey on April 7, 2017.
William Thomas Berry (born July 31, 1958) is a retired American musician and multi-instrumentalist, best known as the drummer for the alternative rock band R.E.M. In addition to his drumming duties, Berry played many other instruments including guitar, bass guitar, and piano, both for songwriting and on R.E.M. records.
 After 17 years with the band, Berry left the music industry to become a farmer, and has since maintained a low profile, making sporadic reunions with R.E.M. and appearing on other artists' records.
Reveal is the twelfth studio album by American alternative rock band R.E.M., released in 2001 on Warner Bros. After having adjusted to former drummer Bill Berry's departure and releasing "Up" to mixed response in 1998, R.E.M. released the more upbeat "Reveal", co-produced with long-time collaborator Patrick McCarthy.
 The album was released to generally positive reviews from music critics.
Paul Whaley (born January 14, 1946) is an American drummer best known as the drummer for rock band Blue Cheer.
 He was the son of country music singer Paul Whaley Sr.
 He grew up in the towns of Vallejo and Winters California.
 He played drums with a Davis, California band called the Oxford Circle.
 Whaley is credited on the Oxford Circle album "Live at the Avalon 1966".
 When he left the Oxford Circle to join Blue Cheer in 1967, the former band dissolved.
 He was the longest-standing member in Blue Cheer other than founder Dickie Peterson in the band when it broke up in late 2009, following Peterson's death at age 63.
Hans Orifice is a drummer best known as a member of Gwar.
 Born Jim Thomson, in Alexandria, Virginia, he first took the name Hans Sphincter, and assumed his current name in 1987.
 Thomson left due to touring commitments with his main band, the Alter Natives, who released three albums on SST Records.
 Richmond drummer Rob Mosby of the Richmond, Virginia punk group White Cross then joined Gwar until 1989.
 Hans Orifice returned briefly in 1989 after Mosby left the group.
 During this time Thomson co-wrote "Sick of You" with the band and completed a U.S. and Canadian tour.
 After the tour Thomson left Gwar on good terms to tour with The Alter Natives.
 He was replaced by current drummer Jizmak Da Gusha.
Richard Reinhardt (born August 11, 1957) is an American drummer best known by his stage name Richie Ramone, and for being the drummer for the punk band the Ramones, from February 1983 until August 1987.
 He was the only Ramones drummer to be credited as the sole composer and writer of six Ramones songs, and as of 2017, he is one of the three surviving members of the band (the others being Marky Ramone and C.J. Ramone).
Lacu (born in 1969 in Tampere as Kari Lahtinen), is a Finnish drummer best known for playing in the Finnish rock band Hanoi Rocks from their reformation in 2002 until his departure in 2008.
 He has also played with Popeda and Snakegod.
Robert "Bobby" Rondinelli (born July 27, 1955) is a rock drummer best known for his work with the hard rock/heavy metal bands like Blue Öyster Cult, Rainbow, Quiet Riot, Black Sabbath, The Lizards, and Rondinelli.
 In July 2013, Rondinelli was announced as the new drummer for the Axel Rudi Pell band, replacing previous drummer Mike Terrana.
 Rondinelli has played on subsequent albums and tours, and remains with the band at time of writing (February 2016).
Nathan Jonas "Joey" Jordison (born April 26, 1975), is an American musician, songwriter, record producer and multi-instrumentalist, best known for his work as the former drummer and co-songwriter for the American heavy metal band Slipknot as well as guitarist in the American horror punk band Murderdolls.
 Jordison played in Slipknot since their formation in 1995 until his departure from the band in December 2013.
 He was the drummer and founder of the American heavy metal band Scar the Martyr which formed in 2013 and disbanded in 2016.
 He grew up in Waukee, Iowa with his parents and two sisters, and was given his first drum kit at the age of 8.
 He performed in several bands until joining in the summer of 1995 with the group The Pale Ones, which would later change their name to Slipknot.
 Of Slipknot's nine-member lineup which lasted from 1999–2010, Joey was the third to join the band.
Terry John Bozzio (born December 27, 1950) is an American drummer best known for his work with Missing Persons and Frank Zappa.
 He has been featured on nine solo or collaborative albums, 26 albums with Zappa, and seven albums with Missing Persons.
 He has been a prolific sideman, playing on numerous releases by other artists since the mid-1970s.
 He was inducted into the "Modern Drummer" Hall of Fame in 1997.
 His stepdaughter, Marina, is also a drummer and a member of the heavy metal band Aldious, and his son Raanen is also a drummer.

Question: Reveal dealt with the departure of a former drummer best known for which band?
Answer: R.E.M.