Yep, the best of all time, as far as I am concerned as well. Proven at the most illustrious stages of the sport (Champions League and the World Cup for the modern period), ridiculously complete wrt. what he could do and how he affected the game at large, has longevity on his side by now, suited to lots of different tactical approaches, and seemed to radiate a palpable aura (which made him such a daunting presense in goal).
That being said, Lev Yashin (a class apart during his era and goalkeeping characteristics largely hold up versus modern counterparts) and Gianluigi Buffon (the finest goalkeeping stopper of all time, with the most consistent fundamentals) are both equally worthy of the No. 1 position, so you can't begrudge folk who place them atop their personal lists.
The likes of Peter Schmeichel, Dino Zoff, Oliver Kahn, Peter Shiton or Edwin van der Sar, as great as they were, are all a tier (or at least ½ a tier) below, methinks.