I still associate #3 on the Flames with Dion Phaneuf. It's been years, and yet every time a new Flames player takes that number, I always end up thinking, "Huh, that's Phaneuf's old number."
Probably a lot of that has to do with the revolving door of defencemen to come through since he was traded (including his number being immediately handed to Ian White, the defenceman the Flames got back in the trade). I don't know if its current wearer, Jyrki Jokipakka, will put a stop to this constant rotating, but I'm excited to see what the future holds no matter what.