Yes it is possible. My ex-wife used was a dealer for a long time in a casino a couple of years ago. She occasionally worked roulette and told me that she/others (i don't remember which) could hit sections on the wheel. And of course if you're tipping well they(dealers) are going to try to hit your section. Despite that, I think you would be wise to avoid roulette if you want to win. Try blackjack or craps if you have to play at all...at least you lose less.
Conversly, she also told me that if things were going well for someone at blackjack and they were a jerk, depending on how she shuffled she could help things change. I think it had to do with putting the undealt cards in the middle of the shoe.
Brian