For truly awful science, I heartily recommend The Core (http://www.imdb.com/title/tt0298814/). To quote from IMDB's goofs page, "since almost all of the "science" in the movie is entirely erroneous, we are prepared to accept that the movie's universe *must* have entirely different rules - it's the only possible explanation".
And for an example of not dodgy science as such, but dodgy everything, you can't go past Vertical Limit (http://www.imdb.com/title/tt0190865/): "everything shown about belaying and climbing techniques, high altitude mountaineering, helicopter usage, high altitude medicine (exception: dex), high altitude mountaineering clothes and the shape of K2 is wrong".
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And for an example of not dodgy science as such, but dodgy everything, you can't go past Vertical Limit (http://www.imdb.com/title/tt0190865/): "everything shown about belaying and climbing techniques, high altitude mountaineering, helicopter usage, high altitude medicine (exception: dex), high altitude mountaineering clothes and the shape of K2 is wrong".