I finally got around to watching the
Top Ground Gear Force Sport Relief bit yesterday...meh. There were a couple funny bits - mini-Hammond in the mini-"digger" tipping into the trench, James (the funniest presenter of the three IMHO) and his shed travesty, and the expression on the homeowner's face. But overall it was pretty contrived. I like that they can swear for some reason, too bad they can't do that on Top Gear.
I also came across
this disturbing column where Jay Leno explains why he won't be hosting the Top Gear US-spinoff. Good move, Jay - it's sounds like it will be complete. *****. Shades of the US Red Dwarf pilot.