Mikhail Tal, the Magician of Riga. 

I'm not actually sure if White has a forced mate there, but it does look fairly promising.  Tal actually criticized himself for not playing the sac against Larsen in the Candidates when he had the chance.  6.Nxf7 has been played in GM games on and off since then with Black winning more often than White.

Lasker said of Alekhine...(re phasing) Of course i see the mate coming.The magic , he places pieces on the correct squares for the attack.

i believe Tal was the stronger player but Nezhmetdinovs attacks were even crazier i would believe. I think Tals sacs seem to have some method (even though its beyond me to say what)while Nezhmetdinovs attacks are beyond any logic. But its just my first half baked opinion because i havent seen enough games obviously.

by the way i dont want to start a political discussion just out of curiousity, were there other ims in soviet union who didnt have the name rashid and didnt get the GM title even though they have beaten GMs regurlarly??

Yes, in fact a large number of really strong players left the Soviet Union and became titled players in Europe and the US in the early 1990s. 

thank you very much

Morpy - Tal - Fischer - Kasparov

Attacking in blitz to make your opponent think, so you can think on his time is quite often is part of a sound sacrifice.

I'd go with Nezhmetdinov, in the matches he plays with Tal, he comes out on top. Another great tactician I think should be mentioned is Veselin Topalov :D