[QUOTE=Jammer]
Best
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College Basketball: I’m biased on this one. Gotta go with the Dean E. Smith Center in Chapel Hill
Worst
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College Basketball: It gets a lot of good publicity for the energetic crowds, but as a place to comfortably enjoy a game, Duke’s Cameron Indoor Stadium is bad. Very bad. Cramped. Hot. Ugly. But again, I’m a little biased on this one.
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Yay, C–A–R–O–L.I.N.A, Let’s Go!!! 
The Dean Dome is up there on my college b-ball list as well, not only because everything in the building, including the girders, is Carolina Blue, but because it’s a fairly airy, open place. I think the RBC Center is nicer in terms of amenities and so forth, but I found it to be a bit claustrophobic in the thoroughfare areas, mostly because of all the obstacles behind which crowds can form (stairs, food stalls, etc.).
I agree that Cameron, for all its atmosphere, is a somewhat uncomfortable place to watch a game. The seats seem to be WAY too close together, making it tough to get out if you need to. There aren’t enough bathrooms, and the food stalls are in relatively narrow high-traffic areas, thus clogging things up when a line forms. On top of all that, upper-level seats cost $60 a seat, which AFAIK is pretty steep for college b-ball tickets (nice LL seats in the Dean Dome are roughly $40, FWIW).
The nicest pro venue I’ve ever been in? Hmmm…I think some of the NBA arenas (Orlando, Washington, and Charlotte I’ve been to) are quite nice. I agree that Charlotte is one of the best arenas in use today (the new arena, not the old Charlotte Coliseum).
The worst I’ve been in? Lynah Rink at Cornell University. Seriously, hockey is THE big (revenue) sport at Cornell, and yet Lynah is SO. FREAKING. SMALL. Aside from having too few seats, there’s not a lot of circulating space around the stands, and scarce restrooms or permanent food vendors. It’s kind of sad because the building that it’s attached to (more sports facilities) is much nicer.