Honestly, I'd be perfectly happy if you didn't address the actor change at all. It's not like we won't understand what's going on.

Heck, unless you're actually putting the Avengers into this, there's not really even a reason to deal with Mark Ruffalo at all (is there?)

Still, with all the Avengers hype this weekend, I just wish this were done. I'd so be doing a marathon right now. (Although if you check the last dozen posts, I seem to be the last person still interested...)

Edit: I was just thinking... if you keep the transition clips, you need someone who can do a good impersonation of Stan Lee.