4. Sleep

Sleep disbanded in 1998 after struggling to get their landmark albums Jerusalem and Dopesmoker released by London Records. But Sleep became stoner metal legends when both albums finally saw the light of day in the following years. That led to Sleep reuniting for a few shows in 2009 (followed by a full tour in 2010). And even though Matt Pike has been keeping busy with High On Fire, Sleep have continue to play a few shows here and there. The chance to hear spanking new music from the stoner rock pioneers themselves is an exciting notion. In fact, it seems close to becoming a reality.