Battle for the Avengers Tower 360°
The Avengers battle Ultron's minions in this 360 degree video (available on Android phones or Google Chrome).
Guardians of the Galaxy - Making of VFX
fxguide have posted a massive article on the VFX of Guardians of the Galaxy.
Marvel Studios Phase 1 & 2 - A Look Back
Look back at Marvel's Phase 1 & 2 as the Marvel Cinematic Universe expands with Guardians of the Galaxy.