This is one of my favorite exoplanet sites
http://www.oklo.org/
Some other interesting ones that happened some time back
the Genesis planet - PSR B1620-26, it is thought to be almost 13 billion years old, discovery made thanks to Hubble
Keck Observatory has confirms the existence of Jupiter-sized planet, spotted by a network of astronomers using regular backyard telescopes, planet named TrES-1
2M1207b a direct image of an extra solar planet ?
A bit off-topic but Sporally has a vote going when Earth-II will be found
When will we find exoEarth