In the beginning, there was Sigourney Weaver. Now we have Milla Jovovich. Sandra Bullock's had a chance to be immortalized in the Mount Rushmore of flat-chested action stars; but something went wrong along the way...
...is Kate Winslet. But that does not bother Sandra Bullock. With the millions she makes and the MTV Movie awards she collected for Speed, along with that golden globe she picked up for Miss Congeniality, Sandra is content with knowing she has a good 2 years left of making a few more contrived romantic comedies. She tried to have a go at actual acting in 'Crash', playing a racist wife of a district attorney. Unfortunetly, you really had to work hard to suspend your belief, believing Brendan Fraser was an actual district attorney. She went back to her usual roles of playing some woman who balances being quirky with nagging. Sometimes she's in a thriller...but so is Jodie Foster (and you know how many Jodie Foster thrillers you've actually watched).
The best way to describe Sandra Bullock is that she's like a baby turtle. She's cute when your bastard college roomate gives her to you on your 21st birthday. She doesn't do much, but you're still paying attention to how adorable and lovable she can be for just being there. Before you know it, her tank is too small and you wonder when she grew too big for it. You buy her a new and expensive tank and go back to your usual routine of ignoring her. Eventually the tank smells so bad, you have to go out of your way to dump it out and clean it. That is the only time you pop up to see her. She's such a cumbersome chore.
In the end, love her or hate her, you probably don't do either. She makes movies and they're out there. That's it.