Since you used Hummer as an example, I'll play, even though there are quite a few threads on members rides :mrgreen:.
2009 Hummer H3T Alpha with V8, Carbon Black Metallic
MileMarker 9500 winch with wireless remote & synthetic winchline, Pull Pal
250 AMP alternator
AMP power steps with LED lights (got small kids so sliders are on hold until they can jump futher

)
H3T GM roof marker lights
B&B V8 Alpha exhaust system
Blk Pwdr coated custom (mods made at manufacturer) GOBI Stealth Roof Rack with sunroof insert
2X PIAA spots mounted on ARB bumper and 2X PIAA cowl mounted spots
Blk Vision X Xmitter Xtreme Intensity LED 42" light bar
Blk Vision X Xmitter Xtreme Intensity LED 6" lights for rear (2)
Blk Pwdr coated Gobi Stealth Rack tool boxes (2)
Gobi jack/shovel mounts
Gobi HiLift mount
GM headrest DVD entertainment system
Air Doc Intake with K&N filter
Rancho Lift
Rancho RS9000X Shocks with on the fly air compressor powered My Ride Wireless adjustability system
Blk 17" KMC Revolver wheels
35" Nitto Trail Grapplers
Superchip programmer
Bully Dog performance monitor
Predator computer upgrade
Purple Cranium Differential guard
2nd limited edition run of discontinued Trail Duty low profile rear shock mounts
Diamondback locking tonneau cover with Kevlar reinforced Linex coating
UCP skids, guards
Cobra Nitewatch CB
Ton of powdercoated cosmetic mods
Adding second air compressor (ARB) for tires, kids floats lol, custom H3T logo cutout duel battery tray by Artec (being cut this week

) with duel Optimas and IBS duel battery system, underbody/rock lights and a CouplerTec electronic capacitive coupling rust prevention system by the end of October/first of November.
Mods after first of the year 2011 will include drive train upgrades: tierods, drive shafts, brakes, more UBP, over bed mounted ARB tent (hopefully or going with custom offroad trailer and mount ARB tent on top if bed tonneau mount doesn't work out), fridge, Safari snorkel, and some type of bed/tonneau cover (depending on tent setup)/ tailgate 35" spare tire mount.
Pics before Gobi rack accessories, UBP, TD shock mounts added