StingingVelvet: I swear every developer interview I read touches on film classics more than video game classics, and they always talk about achieving a "film look" instead of a real one.
Likely something to do with how games have evolved over time and how they're able to convey a story very similar to that of a film. You now get the division of people looking to either replicate what great films (or television shows) did or replicate what the games of yesteryear did. Rarely do you get that blend of both, I assume because it becomes a difficult balancing act to deliver a rich story opposite "here's my desire to be the next great homage of (title)".
All that in mind, it's definitely still possible to achieve that film style goal without going the big name route, as plenty of games stand in example of. I wish this didn't extend beyond the voice cast though, but it does. Things like the hiring of composers known primarily for their film work (Clint Mansell, etc.) to essentially come in and turn in a few pieces of music while the rest of the "regular" joe composers pick up the slack and stand in the shadow cast by their peer.
It ultimately works out in the end I guess. Few times do people often remark "remember game where (big name) was brought on to work on it? God it was awful". I guess it may also owe a lot toward how marketing goes - it's hard to ignore something like Keanu in Cyberpunk when no one, not even the man himself, is going to let anyone forget for a second that he's there. Basically if the neon sign is on then your eyes (or ears, I guess) are likely going to be drawn to it.