Yes, it is impossible to talk about Repeaters without mentioning Groundhog Day - a charming family film where a sardonic Bill Murray has to relive the same dull day again and again until he can find a way of somehow - literally - moving his life forwards.
Groundhog Day was a happy-go-lucky sort of affair, filled with light-hearted 'what if' scenarios. Here, in 'Repeaters,' we're presented with a similar premise, i.e. what happens if you're stuck in a day. However, the results are far from Groundhog-like.
This time there are three central characters who keep reliving the same day and they're all in a recovery centre, trying to get over various addictions. Then, once they discover their new 'power,' they hardly use it to help the homeless. Therefore we're treated to what people with very dubious morals would do if their day had absolutely no consequences whatsoever.
It's a great film. The performances are perfect from all characters, the setting it suitably gritty and it's not too long. However, it's not one for the faint-hearted. It covers pretty much all the nastiest adult themes you can think of, so, if you're looking for a 'feel-good' kind of movie, you better steer clear.
Bottom line: Groundhog Day + comedy = Groundhog Day. Groundhog Day + action = Source Code, whereas Groundhog Day and nastiness = Repeaters. Not one for everyone, but if you're looking for some gritty sci-fi/thriller, definitely give this one a go.