Many moments. The first goal against QPR away in a very difficult away fixture in 2011/2012 season is up there for me personally as he showed his ability to score break the ice, crucial goals. Composure, cut inside under pressure and the finish. That match was very tough.
The header against Totenham that season away was also top. It looked impossible as the ball was slightly behind him but he managed to adjust his neck and head it to the far corner. Another momentous goal was that in the Bernabeau. The Dzeko Balotelli moment where he was tripped by Balotelli was also funny.
As I said, the list goes on but my favorite has to be QPR at home, 2011/2012 season: the equalizer that instigated the greatest moment in premier league history.