Check out the FART resteraunt.
I had to get a photo of that,
Good sights in poznan....,
Stary browar you can't miss it, again stary rynek is very pretty, Brovaria in the old square do awesome beer, If you like clubbing SQ is very good, as is Pozdali, if the weather is good Pozdali plaza near the train station is quite good and has an outdoor pool, Citadela is also apparently very pretty but never been, looks huge though. The cathedral is also worth a look.
Avoid walking around jezyce, debiec and wilda districts at night as they can get quite rough,
Rodeo drive in stary browar do awesome food as does the Sushi bar on the ground floor of the WBK building near Stary Browar. Avoid the bistro cafes as they generally aren't very hygenic but are stupidly cheap.
Pubs worth visiting, Brogans is usually quite good, Kultowa, Johnny rocker, Minoga smells of sewage but the atmosphere is good, Terratorium is also quite a good club. Dragon is full of expats as is Prolitariat.
Can't think of anything else to add.