The ones in bold are my favorites.

• Tom Waits
• Bright Eyes
• Morrissey
• Silversun Pickups
• Coheed and Cambria (twice)
• Paramore
• Silverchair
• Jimmy Eat World
• Modest Mouse
• The Meat Puppets
• __Ted Leo & The Pharmacists (three times)
• Placebo
• My Chemical Romance
• Rufus Wainwright
• A Fine Frenzy
• Neko Case
• Les Claypool (twice)
• Kevin Devine
• Dax Riggs (twice)
• Cold War Kids
• The Arcade Fire
• Common
• AFI
• Murder by Death
• Bob Dylan