In Vegas?
Besides Guitar Center and Sam Ash you mean?
And a Cirque du Soleil show called Zarkana? :P
A few of my own favorite things:
Sight-seeing wise, I love both
Valley of Fire and Red Rock Canyon.
The
Da Vinci The Exhibition is one of the most breath-taking things I've seen in my life.
The
National Museum of Atomic Testing was also well worth the detour.
Lion Ranch Habitat - if you like big cats. Plus, for an extra fee, we got to play with a cub and feed it. One of the best times of my life!
Sharks at the Bellagio were not bad but not as impressive as I'd hoped either.
Secret Garden and Dolphin habitat I dug - but again, not all that impressive - there are better alternatives in other cities.
I'll try to think of others and let you know if anything comes up.
I know there's a pinball museum which I intend to visit someday soon.
And of course, I'm a big fan of the KISS mini golf, but that's just me. :P