Originally posted by sympl_RS
I think Donnie, himself, traveled back in time. I think I figured out how to do it. After all the bad stuff happened, he decided it would be better if he did die. He was laughing at the end because he figured out how to do it. That's why the bunny guy was crying at the end because, for some reason, he feels bad about something a.k.a hitting the girl. That's why the mother feels like she knows the girl when she rides by on the bike at the end. Because it all happened and Donnie figured out how to go back.
you seem to make the most sense to me, but i guess anyone can be right. i rented it tonight for 49 cents and watched it with my girlfriend and her 13 year old brother. it was a trip. the funny thing was, her brother would know exactly what was going to happen in some portions. like when frank got shot in the eye. i knew he was gonna do something crazy when frank ran over his girl. my question is though, why did he see frank with a bloody eye in the movies and then shoot him? he didnt travel anywhere then.....