As you all know, this is me:

I'm wearing the Starfleet Academy cadet uniform, the same uniform worn by the main characters during the scenes at the Academy (except for Commander Spock, who wears the gray instructor's uniform), and save for one minor alteration, I wore this exact costume every day I was on set.
The scenes in chronological order:
Kirk Arrives at the Riverside Shipyards
Kirk pulls around a corner on his motorcycle and drives screen left as the camera pulls back to reveal a giant "STARFLEET SHIPYARD" sign and dozens of construction workers hustling and bustling as they construct the USS Enterprise. There are a few cadets there too, including three cadets standing right in front of the big sign (me, my friend Bonnie, and another female cadet). I'm wearing a red cap as I turn to scornfully watch Kirk drive by on his motorcycle.

So about five seconds after the above screencap (and in the same shot), you see me quite clearly.
This scene was shot at the Pastoria Energy Facility near Lebec, far north of LA and basically in the middle of nowhere. Still, spy photos leaked online immediately after the shoot, and I spotted me in one of them, wearing that red cap:

Moving on to:
Kirk and McCoy at Starfleet Academy
This brief scene was all done with one camera in one continuous take. Kirk and McCoy are walking down the steps at Starfleet Academy discussing the upcoming Kobayashi Maru test, and at the end of the shot Kirk tells McCoy that he has to go "study."
There are no clips of this specific scene (shot on the steps of the Oviatt Library at CSUN) in any of the ads, but some behind-the-scenes footage of the scene has made it online, and I was barely able to spot me in it. I'm circled in the screencap below, holding a gray Starfleet suitcase in my right hand as I make my way down the steps:

If you keep an eye out for me in this spot in the movie, I'm quite easy to see, though very briefly.
The Court-Martialing of James T. Kirk
As referenced in
Star Trek II: The Wrath of Khan, Cadet Kirk cheats at the Kobayashi Maru test... and he pays the price by facing his accuser, Commander Spock, in military court, where the two meet for the very first time. At the beginning of this scene, Kirk is seated next to McCoy. He is then called forward to defend his actions.

This scene was shot at the Long Beach City Council Chamber. If memory serves me correctly, I'm seated about four rows behind Kirk when he's seated and about six or seven rows behind him when he's standing. There is really only one big establishing shot of the room where you can see me fairly clearly, but it goes by so quickly that even I took four viewings to spot me. :P
This scene is immediately followed by:
Starfleet Academy Shuttle Hangar
Every cadet at Starfleet is called to respond to a emergency distress call, and we are all for the first time assigned to our starships. Once all of these shuttles are boarded, we all lift off into space to our awaiting starships.

Shot in a colossal blimp hangar at the Marine Corps Air Station in Tustin, this scene is relatively long, features hundreds of extras running amok, and consists of dozens of shots compiled together. There were at least thirty takes of each shot and we were constantly assigned to different areas for different takes. Though I
think that might be me running by Spock and Uhura in one shot, I have yet to actually spot me. :P
About an hour of screentime later:
Nero Attacks Earth
Nero, a particularly troubled Romulan, attacks Earth.


Once again shot on the steps of the Oviatt Library at CSUN, I'm quite visible in one shot and even less visible in the next one, provided you know exactly where to look. Given that these shots are in trailers and TV spots, I've circled me for you. :)
Close to the end of the movie, there is one establishing shot of Starfleet Academy (the steps of the Oviatt again) right before the scene with the Spocks. I know I'm in it, just not sure exactly where.
And last but CERTAINLY not least:
The Medal Ceremony
For "creative thinking" on the Kobayashi Maru exam (and amongst other noteworthy accomplishments), Kirk is awarded a special medal by Admiral Barnett in a grand ceremony at Starfleet Academy. Captain Pike is promoted to Admiral, and Kirk is assigned to replace Pike as Captain of the USS Enterprise.

Just like the court-martial scene, this was shot at the Long Beach City Council Chamber... and I'm right behind McCoy the entire time. You can see me very clearly throughout the scene, and when all the cadets cheer at the end, you can even HEAR me. :D
So there you have it. Me in
Star Trek. Go see me if you haven't already done so... and if you have, see it again! You know I will. :)