GOOD NEWS: Allocine has posted a teaser trailer for Un jour mon pere viendra! There is no embeddable code available, but you can watch it HERE! (Or click the image above.)
BAD NEWS: Seeing as how it's the teaser for French audiences, they aren't anticipating any language barriers so of course there are no English subtitles.
GOOD NEWS: They chose a clip of Jamie doing his "Actually I'm an American and my French accent is a bit crap" thing, and it's excellent. Hee. Also, o hai there chest. o.O
BAD NEWS: That is the only clip of Jamie in the whole thing. (It's at the very end, BTW.) Merde. ;) Hopefully if/when they release a longer trailer, he'll feature a bit more.
So kind of a mixed bag, but still... it's footage!
EDIT: Forget what I said about no embeddable version. YouTube to the rescue ;)