I am going to focus on shows where you can get a really good pair of Dr.Brown and Marty so here is my list
Bleach: Dr. Brown = Kisuke, Marty = Ichigo
Code geass: Dr. Brown = Lloyd, Marty = Suzaku
Mirai Nikki: Dr.Brown = Dues, Marty = Yuki, this one is kinda out there but it's an anime about the future so it came to mind
Nichijou: Dr.Brown = Hakase, Marty = Nano, you would have to do some gender bending but I have seen several pics and video's comparing Hakase and Brown so it could be really funny.
Soul Eater: Dr.Brown = Stein, Marty = Black Star
It depends a lot on which movie trailer you plan to use the most because of how different the settings of the 3 are from modern, to future, to western. I think that Code Geass would be the best at trying to get scenery for all 3 settings though if that is what you plan to do.