The BikeStation(TM) people claim that they have been involved in a project in Pittsburgh.
There was some talk that the bike rental place by the jail would be a full-fledged bikestation, back in the late 90s, but that never took off. I heard that Fear Of The Different killed it post 9/11/01, but it could have died of natural causes.
I too have heard talk about reviving this, and I think there is funding in the works for a new feasibility study.
To me, the idea of a bikestation is attractive, but one of the things I like about biking to work is that I can easily park right near my office. A bikestation doesn't give me that. A "parking garage for bikes" along the automotive model somewhat misses the point of what's so great about bikes and downtowns. If I didn't have showers available to me, I might feel differently.