This goes back to the days when my dad was coaching, but I absolutely cannot watch the game with other people. I don't like to talk during the game because I'm way too focused on what is actually going on, and I've found that people tend to find this to be very rude. When I would watch my dad's games, I could only ever watch them with my mom and brother (and even then, it was tough) because they were the only ones who truly understood what it was like.
That's the same kind of mentality I have when I watch the Cavs, and I've given up on trying to change it. I get very upset with people that say they're fans, then don't really care about the outcome (my roommate is an example of this. He's from Cleveland and claims to be a Cavs "fan," but he doesn't know shit about them. The other day he asked me, "So, you think LeBron will be MVP?" I somehow suppressed the urge to punch him in the face. And that actually leads me to another pet peeve of mine. I hate having to explain how I became a fan of the Cavs even though I'm not from Cleveland. Meanwhile, my roommate, who doesn't know shit about the Cavs, tells people he's from Cleveland, and he's assumed to be a Cavs fan. Just really bothers me, but that's a different thread altogether).
Anyway, as for in game superstitions... I gave up the majority of them when my dad stopped coaching. Although, earlier this year I would wear my Cavs hat in games that I thought they would need something extra to win (LA and ORL wins earlier this year involved the hat), but I stopped that when they lost to Milwaukee without LeBron. I wore my Cavs jersey for game 1 of the Magic series, and lets just say that jersey will not be worn during a game... ever again.