Pat O'Brien Photos

Pat O'Brien at the 58th Annual Primetime Emmy Awards.

Pat O'Brien at the VH1 Save The Music Foundation Gala.

Pat O'Brien at the 58th Annual Primetime Emmy Awards.

Pat O'Brien at the 10th Annual Entertainment Tonight Emmy Party.

Pat O'Brien at the 56th Annual Primetime Emmy Awards.

Pat O'Brien and his Guest at the 11th Annual Entertainment Tonight Party.

Pat O'Brien at the 11th Annual Entertainment Tonight Party.

Pat O'Brien at the 79th Annual Academy Awards.

Pat O'Brien at the 33rd Annual Peoples Choice Awards.

Pat O'Brien at the 33rd Annual Peoples Choice Awards.

Pat O'Brien at the 11th Annual Critics Choice Awards.

Pat O'Brien at the 46th Annual Grammy Awards.

Pat O'Brien at the Keep Memory Alive Foundations 10th Annual Gala.

Pat O'Brien at the Irish America Magazine 19th Annual Top 100 Gala.

Pat O'Brien at the NBC Press Tour Party.

Pat O'Brien at the premiere of "The Inside Man."

Pat O'Brien at the premiere of "Lucky Number Slevin."

Pat O'Brien at the 14th Annual Elton John Academy Awards viewing party.

Pat O'Brien at the 46th Annual Grammy Awards.

Pat O'Brien at the 48th Annual Grammy Awards.