I forgot Love Actually! I'm only reminded of films when I come on this thread. Also anything with Robin Williams, Tom Cruise, Tom Hanks and Bruce Willis in it. Too many to mention. Usually all top notch.
There are films you can just watch any time, over and over, like Dead Again and Star Wars. Also The Burbs, laugh like a drain every time Tom Hanks comes down that stoop.
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Also Oblivion, I watch it every time it's on, same with ... I want to say Attack Force Z but that's Mel Gibson, the zombies one, I absolutely luvs it. I'm so weird.