Sonic X, a full anime series based primarily on the Sonic Adventure series
He also was given permission by Hirokazu Yasuhara, the level designer for the majority of the original 16-bit Sonic titles, to post level designs that were going to be put in the game.
Sonic Youth | Sonic the Hedgehog | Sonic Ranch | Rob Sonic | Sonic the Hedgehog (character) | Sonic Shuffle | Sonic X | Sonic Drive-In | Sonic the Hedgehog (series) | Sonic Solutions | Sonic Adventure 2 | Sonic Adventure | Sonic's Rendezvous Band | Sonic hedgehog | Sonic | Summer Sonic Festival | Sonic Youth (album) | Sonic the Hedgehog: The Movie | Sonic the Hedgehog (comic series) | Sonic's Ultimate Genesis Collection | Sonic Seducer | Sonic Riders | Sonic R | Sonic Mayhem | Sonic (magazine) | Sonic Heroes | sonic hedgehog | Sonic Foundry | Sonic Brew | Sonic and the Black Knight |
He was replaced by Ryan Drummond in Sonic Shuffle, and later on by Scott Dreier, until he got replaced by Dan Green (who did the voice of Knuckles in the English dub of Sonic X), and then Travis Willingham.
He currently is still working on the same series since 2005 and was occasionly working in Archie Comics' now-ended side-series Sonic X.