Iron Sky Reviews
This is the most recent example of such that I've seen. Terrible, terrible film, in which it transpires that the Nazis set up a secret base on the dark side of the moon in 1945, and have spent the last 1/2 century or so preparing to invade Earth, with the time finally arriving in when this is set (2018).
Terrible 'acting', some seriously bad 'comedy' moments that just aren't funny, dodgy effects and a plot that feels like it's been made up by a video-game obsessed teenager make this one to avoid.
The plot is absurd but I loved it.