Hey, I just removed my tint today! Its alot easier than most people think. I searched this board and found a post about it. Basically what you need is some citrus cleaner (goo gone!), Windex (the offbrand glass cleaner sucks compared to Windex, so just use Windex!), two terry cloth towels, a razor blade, some plastic wrap, and a sunny day! Then follow these steps:
1) Soak rag with citrus cleaner.
2) Tear a sheet of the plastic wrap and set it beside you (I let it lie over my leg so it didnt get all messed up, you know how plastic wrap does..)
3) While the tint is on the window, wipe it down with the soaked rag.
4) Before the cleaner dries, cover a portion of the window with the plastic wrap (you have to do it fast because the cleaner dries fast when its in direct sunlight, this is why you go ahead and get the plastic wrap ready in step 2)
5) Repeat until you have covered the entire window.
6) Repeat steps 1-5 with the rest of the windows that have tint on them.
7) Go have a beer or something for about 45 minutes while your windows bake in the sun (the sun heats up the glue so it will come off easy and the citrus cleaner is absorbed by the tint to help the glue come off)
8) Take the razor and scrape up a corner of the tint so you can grab it with your fingers (I just cut a slit in the top-middle of the window and pulled it down and to the side)
9) Pull the tint off SLOWLY and SMOOTHLY! (it seems to leave less glue residue if you pull the tint against itself. ie. pull it back flat against the window instead of pulling straight out towards you)
10) Take a clean terry cloth towel and spray it generously with Windex.
11) Wipe away any small remains of glue that are left behind.
12) Go have another beer.
I hope this helps, the only part that takes any time is waiting for the citrus cleaner to soak into the tint while it heats up. I dind't find it necessary to use any device (heat gun or blow drier) to heat up the window because it was a nice sunny 70 degree day

The purpose of the plastic wrap is to lock in the citrus cleaner so it can do its work. Otherwise it just dries up and doesn't help at all then you end up making a big mess!