Clausthaller (not the canned), Paulaner Helles and Hefe-Weiß, Erdinger Weiß, Lämmbrau, and Hacker Pschorr Helles are all very tasty tipples. Spaten Helles is wretched, and Löwenbrau Helles is surprisingly not too terrible, given the regular stuff is garbage.
The non-alcoholic Erdinger Weissbier is probably the best non-alcoholic beer I've tasted.
You need to get "into" it a little before you realize it actually does taste like beer, except without the alcohol, and how much part of the flavour alcohol actually is (even with the relatively low 5% ABV that most beers are).
Also, and this may differ per regulations where you are, but many "non-alcoholic" beers do in fact contain up to 0.5% alcohol (including the Erdinger Weizener). So you'd have to drink 10 of them to feel the buzz of one normal beer, but I'd expect by that time you'd be feeling something else, over the buzz from a single beer :-P
