Monsters vs Mechs FTW! - PACIFIC RIM - Trailer & Poster

And here's the Official Poster and a couple of other col images via Pacific Rim on Facebook

Set Video - Thor 2: The Dark World - Plus Horses & Baddies

   
 Check Out The Action In Thor 2

First set video and more photos of the battle staged on the Thor 2 UK set - via Collider.

Captain America & Thor "Another Bout" Avengers Clip

First finished peek at the battle we saw being filmed in Cleveland last year!

Jedi vs Sith - Times Square Epic Battle - SWTOR Launch

 Part of NYC's game launch event for Star Wars: The Old Republic 12/20/11. Photos via SWTOR.

(Now UPDATED with video)

Captain America and Thor Vs The Mo-Cap Men! - Epic Avengers Set Videos - Spoilery Warning

Via Cinema Blend with an awesome tip to Medical Mutual of Ohio's Facebook page.

Yep, their office building overlooks the set and their FB page is the source of many clips and photos.
But wait... there's more via /Film

Batman vs Bane - Actually Battle in Latest Dark Knight Rises Set Photos & Video (update)

See more excellent Bat-fight photos at Eyeprime.net.

UPDATE: Video of same scene via Batman-News.com and Subaruwrxfan