More pictures:
Dvortsovaya Embankment (Neva river).
View of Kunstkamera (across Neva).
Strelka (Vassilievskiy island).
Here is much more pictures of St.Petersburg: in summer, in winter, cathedrals, etc..
If you are still hungry for more pics, go take a look at a great collection of art and cultural resources on Friends and Partners server. They also have a lot of links to other places of interest for SPb-ers.