A brand new game just released by David Thorburn, BMX Backflips is another marvel in Flash game design. The game has you navigating hills, half pipes, and jumps on a BMX bike, while performing wheelies and backflips for points. The game is mission oriented and presents various levels of increasing complexity. This variety combined with solid Flash programming, smooth animation and realistic physics is what makes the game shine.
The only downside: sound is sorely missing from most of his games. But that's a small complaint compared to how enjoyable his games are. David tells me that he aims towards minimalism in his designs to compensate for Flash's lack of power. And his games are a testament to those who emphasize gameplay over graphics: they arguably create the games that are more fun to play. Click.