While living in Las Vegas, this was my favorite casino (off-the-strip). It's such an interesting collection of people--lots of people looking like 80's glam rockers, old ladies with oxygen tanks, obese bingo fanatics, etc.. The bingo room is fun, though I've never won anything there. I really liked the Blackjack tables--there's plenty of room for everyone at the $5 tables and the dealers are laid-back and helpful.
The last time I was there, I got a Guinness stout at the center bar (not a popular beer in Vegas) and then went to the little seafood place in the corner for some outrageously good fish stew.
The theater here has amazing screens...the biggest and most vibrant I've ever seen. It's too bad that there's rarely films there that I'd want to see (non-mainstream films are rare in Vegas).
Update 7/24/06:
My visit to the Suncoast on Saturday night wasn't as pleasant. The boullabaise (sp?) at the restaurant in the corner was better than ever, but the gambling wasn't any fun at all. All of the blackjack dealers seemed miserable and unfriendly. One dealer snapped at me for allowing my friend to help me play (he was playing as well)--and the two other dealers I tried were as mean as possible. I burned through $200 really fast and didn't see anyone win anything. It was strange how the dealers kept getting 21 over and over again.