Hakeem Olajuwon		63 y.o.	rating 42/100
Warner Oland		146 y.o.	rating 38/100
Keith Olbermann		67 y.o.	rating 93/100
Daniel Olbrychski		81 y.o.	rating 56/100
Hugh Beaumont		117 y.o.	rating 58/100
Gabriel Olds		54 y.o.	rating 36/100
Richard Beaumont		64 y.o.	rating 41/100
Vinícius de Oliveira		40 y.o.	rating 44/100
Barret Oliver		52 y.o.	rating 6/100
Michael Oliver		44 y.o.	rating 97/100
Steve Oliver		84 y.o.	rating 27/100
Vic Oliver		127 y.o.	rating 39/100
Richard Olivier		64 y.o.	rating 77/100
Alberto Olmedo		92 y.o.	rating 98/100
Bodie Olmos		50 y.o.	rating 32/100
Mico Olmos		53 y.o.	rating 81/100
Dennis Olsen		88 y.o.	rating 86/100
Eric Christian Olsen		48 y.o.	rating 60/100
Jim Beaver		75 y.o.	rating 87/100
Johnny Olson		115 y.o.	rating 21/100
Mike Beaver		52 y.o.	rating 23/100
Merlin Olsen		85 y.o.	rating 92/100
Moroni Olsen		136 y.o.	rating 12/100
Lord Beaverbrook		146 y.o.	rating 5/100
Lute Olson		91 y.o.	rating 28/100
Mitchell Olson		49 y.o.	rating 6/100
Wesley Snipes		63 y.o.	rating 65/100
Scott Olynek		46 y.o.	rating 84/100
Timothy Olyphant	Nominated for Primetime Emmy.	57 y.o.	rating 95/100
Andy On		49 y.o.	rating 48/100
Michael Ondaatje		82 y.o.	rating 63/100
Jerry Only		66 y.o.	rating 16/100
Steve Ontiveros		65 y.o.	rating 43/100
Michael Ontkean		80 y.o.	rating 43/100
Paul Sorvino		87 y.o.	rating 13/100
David Opatoshu	Won Primetime Emmy.	108 y.o.	rating 28/100
Max Ophüls	Nominated for 2 Oscars.	123 y.o.	rating 81/100
Arve Opsahl		104 y.o.	rating 74/100
Roy Orbison		89 y.o.	rating 53/100
Felice Orlandi		101 y.o.	rating 1/100

Actor