There should be a distinction here between "funny sounding" and "bad". Many well done accents sound ridiculous, but are nontheless pretty perfect.
I don't think Patrick Wilson even did an accent in PHANTOM. I believe Schumacher told them accents were optional, and he and Butler chose to forgo them.
What the hell is an "American" accent, exactly?
It's true that almost everyone had an accent in VALKYRIE, but not a German one. I believe this was also intentional.
And you all understand that Brad Pitt is not playing a serious character in BASTERDS, right? That accent, and its absurdity, is intentional.
On that note, if you're all going to condemn Brad Pitt because you can hear his natural drawl in there when he does an accent, do the same for Bale.
Ford's accent in K-19 was indeed weird, but also fantastic for his character.
I think Halle Berry in X-MEN takes the cake.
And probably anything John Malchovich does. Fantastic actor, but hardly a chameleon.