I feel I must defend Keanu Reeves - having seen most of his films I find he is as good as the person directing him. For example, his performances in The Gift, Parenthood, The Matrix, Bill and Ted, Speed, My Own Private Idaho and The Watcher (to name a few) I thought were actually very good while some other films he's terrible in. Perhaps its just me..........
However, people like Orlando Bloom and Jude Law are terrible no matter who's directing them and what films they're in IMO.
Also, Jennifer Lopez - arrogant beyond belief that she keeps inflicting her films on the world, thinking that she's good. Urrggh.
I also think Paul Walker deserves a nod, I just want to slap him with a wet fish whenever I see him.