At home I have a somewhat cluttered desk..Not much room to put transformers with everybody coming, going and leaving their stuff there when they use the computer. So this is what I have sitting there currently, or are going to be sitting there soon.
1. Several Mini-Con teams-Armada Emergency, Dark Saber and Classics Clear Skies Team sit in vehicle mode (or beast mode for Nightscream the dragon) on my desk.
2. Movie legends- the 'movie cars' segment, Bumblebee, Barricade, Jazz and Ratchet. I tend to play with Jazz and Bumblebee more though.
3. Movie legends-'larger vehicles' segment, Blackout, Starscream, Optimus Prime and Megatron. All lined up on top of a box I keep my old Micro Machines in (before I got restarted on transformers I used to love 'em, and bought quite a few sets off Ebay.
4. Soon-to-be-placed Allspark Camshaft-Probably after I've posted this he'll be standing on my desk, gun out, probably aiming at the minicons or perhaps Megatron. (Not even your fusion cannon will save you now! Haha!)
5. Alternators Jaguar XK Ravage-This guy prowls the right side of my desk sometimes, in front of the printer. He's quite fun to pose.

Well, not exactly a top five, as I don't really know what's my biggest favourite outta these. But at least you know what's watching me as I use the computer now! (And of course, what I play with from time to time)