Based on the pictures I'd say Splinter Cell looks least impressive of those with actual game images. MGS:R is of course in last place because there are no game visuals on which to base a decision.
Very hard to pick a winner there so I will just go with the games I'm most looking forward to: GoWIII and Heavy Rain, with Last Guardian coming in close behind.
Technically perhaps Crysis will kill them all, but that's not all there is to visual impressiveness.
It's a shame they mostly show characters for ME2 because it seems like character modelling in ME 2 is a bit behind a few other titles in this list: Heavy Rain for one.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
