Phantom Menace also had the 2001 space pod.

Avengers movie will be #1 in two years from now.

During the sequence "So Beautiful yet so Dangerous" in Heavy Metal, you see the Enterprise fly across the screen as well.

i wouldn't even call most of these "crossovers."  more like easter eggs.

and you put the hieroglyph of C3-PO and R2D2 above Stark's ACTUAL APPEARANCE in hulk??

since this is a crossover article, that would mean that the characters actually, physically appeared in, and had something to do with the movie.  but the only actual CROSSOVERS are up at the top of the list??  doesn't make sense...

and where are the crossovers of the sheriff in Tarantino's movies (Kill Bill and Grind House).  or the nurse with the different color needles that was in both Kill Bill and Grindhouse??

THOSE are crossovers...

Although it's not a theatrical movie, in the pilot for the new BSG, when Laura Rosilyn was seeing the doctor about her cancer, you can see a Firfly ship flying overhead.  A nice little nod to a gone too soon show.

More Easter Eggs than crossovers.

Starks in the Hulk should be number 1. This one was  intentional while most others were as BobaMig said Easter Eggs

And how can you omit the Vega Brothers from Pulp Fiction and Reservoir Dogs?

We really could use some zoom on these...

Yeah, gotta agree with some of the other posts.  Most of these aren't cross-overs at all.  Just little nods of the head or winks to other works or just a little easter egg.

The list seems to be backwards.  Put the "easter Eggs" first, becasue they are fun to have on the list, and then put the actually crossovers at the top of the list.

Fun article none the less.

The Millenium Falcon is part of the attack on the Borg at the beginning of Star Trek: First Contact