Minus the 2 dozen Disney VHS we all had, I think it was Tremors on TV, and Jurrasic Park on the big screen.
I can easily say The Empire Strikes Back. Main memory I have of it(was 4) is Luke falling down the tube at the end. My parents took me to SW in 77 or 78 but I do not remember it. I also remember seeing Raiders of the Lost Ark, Clash of the Titans, Red Dawn, and of course Return of the Jedi in the next couple years..
The first movie I remember seeing was Return of the Jedi in the theaters when I was four. I don't remember a lot, but I have visions planets with X-wing engine burners seared into my memory.
@Home: I'm not sure, I'd guess A Land Before Time. I don't remember having not seen it. The earliest time I can distinctly remember watching a movie was Nightmare on Elm St & Child's Play. I might have been 5 at the time I watched those 2 movies. @Theater: Once again, I'm not sure, but I can recall watching Teenage Mutant Ninja Turtles III in a theater, and it came out 9 days after my 7th birthday. No other movie released earlier that I've seen am a sure I saw in Theaters.
Star Wars at the Meyerland movie theater when I was 7. Imagine a 7 year old kid seeing this on the big screen for the first time: Spoiler My life would never be the same...
I'm going to go with Even though I remember seeing some other movie at the drive in theater before this. Unfortunately, I can't figure out what movie it was.