Joe Montana at his best was the greatest postseason QB I've ever seen. His '89 postseason may be the greatest ever by a QB:
Year Opp Result | CMP ATT PYD PTD INT | RSH YD TD
1989
min W,41-13 | 17 24 241 4 0 | 2 0 0
1989
ram W,30-3 | 26 30 262 2 0 | 1 4 0
*1989
den W,55-10 | 22 29 297 5 0 | 2 15 0
* - Super Bowl