According to its author, Icecrown Citadel - The Movie was inspired by Invisura's Ulduar: The Movie. The comparison is fairly apt, since this kind of long cinematic view of a raid is a relatively new concept. According to Cybeloras, Ulduar: The Movie is his favorite WoW film "of all time," so he's understandably pretty excited about this project. There's enough call-backs to Ulduar' s that you don't miss Icecrown's roots.
I think this is a fun movie for anyone who enjoys the lore of Icecrown Citadel. There's plenty of information here to get your fix for story and genre, while still focusing on the experience of raiding the Lich King's homebase. Cybeloras has done a pretty good job with this project, and I'm excited to see what comes next. The first part only includes the bosses from the lower spire, and the second part will be out once the creator has enough footage.
Check it out yourself, and let us know what you think.