The various Lego movies?
I got part way through The Lego Movie while on the way to Montana for a mission trip, but our youth pastor ended at the time ended up taking away my friend's phone before we could finish it. I get that he wanted us to socialize with each other, but it was an 8hr+ car ride, and after a few hours, we had run out of things to talk about. It's not like watching a movie together is exactly antisocial, either.
The BIONICLE films hold a special place in my heart, especially the first two. I don't care how "good" they really are, as far as nostalgia is concerned, they're 10/10s in my book. I've also remember watching Lego: The Adventures of Clutch Powers, which was pretty fun. Eventually I'd like to check out the The LEGO Ninjago Movie as well, despite knowing hardly anything about the series. The NINJAGO City set is one the most impressive I've seen by LEGO. If I had the disposable income, maybe I'd be tempted to pick it up.