Every Star Trek fan-slash-gambler knows that in Las Vegas, you have to visit the Hilton to experience Star Trek come to life here in the measly 21st century. (the first time I typed that sentence I typed "23rd" unconsciously, truly showing my inner geek. Sigh). But do all those M&M collectors out there know they have a similar mecca in sin city? Probably. But I'm guessing any right minded readers out there don't. The M&M World store is four stories filled with every merchandise item you could possibly conceive of - and about 700 more.
Crossover fans will want to look out for the M&M Star Wars toys, ornaments, and I can't imagine how much more. And for convenience

sake, it's right next door to a four-story Coca Cola collectors store. So if they ever come out
with Coke flavored M&Ms, they'll have to duke it out to see whose floor space it occupies.
I'm not an M&M or Coke collector, but I have to admit that when I get here, I can't resist buying large bags of monochromatic M&Ms (black, grey, & white... say, how do three colors mean "monochromatic?"). They have dozens of different colors and,

maybe it's just because they cost about four times as much as in the local grocery store, but I do believe they taste better from there.
Finally, they do have an item everyone should probably own, collector or not: M&M boxers. Nuff said.