A.C.
I like them, and think they're fun. I wish there were more opportunities for it. Food is an easy ice breaker and brings people together. From there, we can play games or have great conversations, hopefully a good mix of serious and funny. I think there's something to be said for sharing and receiving, and the goodwill it helps create. I don't have a favorite dish though; it depends on what's going on, if someone assigns me to a specific type of food (appetizer, side, dessert, drink, etc). There's always offenders. I think as long as you aren't there front and center to make a full plate before everyone else has gone through, it's perfectly fine.
I've done potlucks with neighbors, friends, a church, our ladies Bible study, and the office. They're much more fun at a home I think, even if it's work colleagues, but at someone's home.....the talking and getting to know each other isn't really as "feasible" at work because, well, you have to work. :)
I'm 100% with Bridgett on this one...I'd rather the food be eaten then me worry about bringing it back home. A step further, I would even possibly get my feelings hurt, lol, if someone didn't eat my food. (I'd get over it, but I'd be like "dang---this isn't good???") I think you being called tacky and a moocher for a single brownie towards the end of the day is silly and a bit over the top. Claws are out today...what's the deal? This is the 2nd out of 4 posts that I've seen some harsh answers. 'Tis the season......for merriment and grinches alike, I suppose. :)