STS-133 and STS-134 are left, so two more.

NASA has two more shuttle flights planned: STS 134 and STS 135. There have been 133 shuttle flights so far, including STS-133 which concluded on March 09, 2011.

Discovery's finally mission was STS-133. The STS-133 crew members were Commander Steven Lindsey, Pilot Eric Boe, Mission Specialists Alvin Drew, Michael Barratt, Steve Bowen, and Nicole Stott.

The last shuttle missions in 2011 were STS-135 (July 8, 2011), STS-134, STS-133.

Probably won't be many (if any) in 2012 due to budget cuts.

For list of current and past shuttle missions check out the related links below.

NASA has plans to launch 5 space Huttles in 2010, after that they will rely only on the Russian Soyuz rocket. Here is a list of the future mission (Please note that date are subject to chage).

STS-130; Febuary 4th

STS-131; March 18th

STS-132; May 14th

STS-134; July 29th

STS-133; September 16th