Europeans in general, thought British and Germen the most, it seems, aren't so big on everyone looking perfect for a role, when it comes to making movies. Lots of actors and actresses look almost like regular people, with a lighting and makeup team behind them. That seems to be more of a rarity in the Americas (central and South American movies I've seen have had the same Hollywood-like perfection going on, just with more TnA hanging out).
Often times, it makes roles less believable (suspendable?), since the character shouldn't look like perfectly clean-cut, or be so charismatic, or whatever else, but that actor just is that way, and in particular, with popular ones, you already have an image of what the actor is like outside of the movie or TV show, before going in.
Or, at least, that's my take on it.