LEGO® Minifigures™ Series 3 were introduced in January 2011. Collection includes: Tennis Player, Hula Dancer, Space Alien, Samurai Warrior, Sumo Wrestler, Rapper, Fisherman, Tribal Chief, Snowboarder, Elf, Race Car Driver, Pilot, Baseball Player, Mummy, Space Villain, Gorilla Suit Guy.
The idea behind collectable Minifigures™ was that each minifigure come in a sealed bag, so you never knew which minifigure you might get. You can reed more details on Series 1 here. Series 2 is described here.
Detailed information can be found on LEGO® website here.
Although released in 2010, not available any more You can still try to find them on eBay.
Some more information on this series can be found on Brickipedia.
Below you can find photos of all Minifigures in this collection: