This thread is too good to let it die.
#1 rimfire - Browning buckmark with 5" bull barrel...amazing little pistol. 12ga hulls at 25yds, clay birds out to 40yds no problem with irons. Points in my hand as naturally as my wiener. I just bought a Ruger Charger today, that may dethrone it, but its cheating really.
#1 centerfire - I swear this is true, Springfield XDM in 40S&W. I used it in my CCW qualifications and amazed everyone including myself. By the end of the test (20-30 rounds?) I had one hole the size of a hardball right where I was pointing. I've been working on handloads for it lately. It shoots so well that I immeadiatly dismiss any load that groups 5 shots more than 2" at 25 yds from a rest. Even the cheap white box winchester goes under 2.5"! My new S&W 1911 is showing promise though. It's so pretty I want it to win.