It wasn't that bad a movie. Once the alien at the front door of the cinema had removed my brain I had a lot of fun.
In fact, it's worth watching the movie simply because it's practically a point-by-point review of "what not to do in a movie".
Stupid flashback at the beginning? Check.
Boring character non-development? Check.
Stupid characters? Check (it takes the half an hour to turn on the news? Really? Wow.)
Stupid plan for escape that gets everyone killed? Check
Going out into broad daylight where there are aliens who can suck you into the sky... in a convertible? Check
Annoying dog gets owner killed? Check
Character that forgets to keep self-locking door open? Check
Guns can open doors? Check
Man is his own worst enemy? Check.
This movie is so boring we've fast forwarded it for you? Check
Aliens that can't be killed by modern weapons but can be killed by bricks? Check.
Humans that gain superpowers from alien exposure? Check
Superpowers that are on/off from scene to scene? Check
Absolutely pointless invasion? Check (really? you want our brains? why not use our bodies as batteries too?)
Unintentional Futurama homage to brains-in-a-jar? Check
Wilheim scream? Check - twice - at the same moment (subtle, eh?)
Pointless "Noooooooooooooooo!"? Check
Unresolved ending - the "we run out of budget so here are some stills" method. Check

This film jumped the shark half an hour in, and the shark was watching Independence Day

But, you know, if you see it with friends, the post-film chat is worth it