Thanks to my taping of the ITV premier of Star Wars I guess I've seen that film more times than anything else.
But since then I try to keep really good films as a rare treat so as to not spoil them.
So perversely I have probably seen TPM more times (due to fan edits) than ESB by now.
I've also seen Aliens more times than Alien even though I don't regard the sequel anywhere near as much as the original.
Musicals on the other hand I see as a visual music album so I never tire of watching Rocky Horror, Hedwig And The Angry Inch or Tommy and have seen them hundreds of times.
In terms of theatrical viewings it has to be Indiana Jones And The Temple Of Doom which I watched 17 times on it's first release because I had a crush on Harrison Ford who was kind enough to get his boobs out for a reasonable stretch of the film which was released as my hormones were in full flood.
Raiders however I only saw twice theatrically and only then when on re-release after being dragged along largely against my will by friends.
It seemed to be some kind of war film with aspects of a Western about it going by the trailer and the poster and neither of the genres appealed to me when I was eleven.
When I saw it I fell in love with the film and got it on Betamax as soon as possible but my dad got rid of our Betamax player so I couldn't watch it for years.
It's still the only Indiana Jones film that works for me and I still reserve it as a rare treat.