Chris Hemsworth hosted Saturday Night Live last weekend, and there was a skit featuring Thor and some of the Avengers in the aftermath of the Avengers 2 Ultron battle.
SNL is at another low-point in its existence, IMO (I'm a fan, but thankfully I can DVR it and scan through the crap), BUT I enjoyed this skit (a new guy does a pretty good RDJR impression), mostly because it's interesting that EVERYONE knows who the Avengers are these days, as opposed to my youth, when you MIGHT meet someone who has heard of the X-men.
Anyhoo, check it out, I didn't bother looking up a link, I think everyone knows how to google these days.
How about this for a crossover? Awhile back, Hugh Jackman was on the Tonight Show with Jimmy Fallon promoting his new film, Chappie. As he is wont to do, Jimmy likes playing silly (but amusing) games so he invited Hugh to play, I forgot the name of it, but it's Musical Chairs but with beer instead. They have this wide table set up with various groupings of cups of beer, the players have to circle the table and when the music stops, everyone tries to grab a cup of beer. The player(s) who don't are out.
Needing more players, Jimmy invites out some other guests and celebrities, one of whom was Chris Hemsworth (who was in NYC I think to host the SNL you referred to Starry). So yeah, Wolverine and Thor played Musical Beers, quite hilarious, google the scene if you want to know how they fared.