Waaaaayyyyy too many to list, and quite a few have already been mentioned. I'm a movie not; consequently have more than 250 of my faves on DVDs (not to mention a boatload of old TV series).
Theme-wise, I'll stop at nearly every old western or war movie, especially those with Eastwood or Duke.
Those two, along with Bogie (Casablanca, African Queen, Treasure of the Sierra Nevadas (Badges?), Maltese Falcon, and, and, and, ...) always get a stop. My "guilty pleasure" actress is Audrey Hepburn.....I fall in love again every time I see her!
Seasonal movies like Wonderful Life, Miracle on 34th St and, of course, the modern classic Christmas Vacation.
To quote one of Eddie Murphy's SNL characters, "these and many, many more!"