We had a brilliant helicopter ride, 20 mins, up and down the strip etc, which just happened to be part of our holiday package.
Bellagio at night does a (free) water spectacular, with music, stay for a couple of shows, seen from the roadside, amazing. About every 20 minutes I think. After one show, people move off, so you can move forwards, but only 1 deep when we were there.
Go inside every hotel, and other entrance you can along the strip, lovely and cool, and spectacular ceiling murals.
We liked the M&M shop for it's silliness.
Venetian is especially spectacular
If you're into photography, take a tripod for night-time, I use small DX type $1.50, just right.
We stayed at the Luxor, very nice, nice location at the end of the strip, open balconies inside a bit scary though.
We found a nice little cafe near the Eiffel Tower, not the one on the front, on a corner nearby.
Quite a nice factory outlet shopping centre off strip, can't remember what it was called. B&D shop sells torches !! (2005)
Watch out your GF doesn't steer you towards the White Chapel, unless you want to.
Downside...As you walk along the Strip, you are badgered by touts every few yards, promoting the seedier side of LV. Especially at night.
And there's CSI T shirts everywhere !
Photo's removed now.