The National Post has a really cool interactive drawing of the cast from Lost, which allows you to add characters to the drawing by the season they were introduced. You can also scroll over the characters for biographical info.
"The original is on two large sheets of bristol taped together," said Chip Zdarsky, who created the piece. "I looked like a madman working on it in the office. And then I had to learn Flash. That program is stupid!"
Lost wraps up tomorrow night.