In no order:
Goo Goo Dolls
Guns N Roses
Andrew McMahon (both Jack's Mannequin/Something Corporate)
Meat Loaf
Elton John
That's excluding all the emo music, including Jimmy Eat World, Sunny Day Real Estate, The Get Up Kids, Motion City Soundtrack, Yellowcard, My Chemical Romance, The Used, Taking Back Sunday, Fall Out Boy, Dashboard Confessional, Jump Little Children et all, which I also adoreas one large group.