TransLink, the agency that handles public transit for the Vancouver area, has made transit passes available that cover the entire six-week duration of the 2010 Olympic Games and Paralympic Games. These passes start on February 8, and run through March 21. A one-zone adult pass costs $110, and covers buses, the Skytrain, and the SeaBus.

It's important to note that you can also buy a one-zone adult pass for the month of February for $73. You can also buy a book of ten "FareSavers", one-zone adult single tickets for $19. It's also important to note that if you're staying outside the Vancouver city limits, you will probably need more than one zone; the rule on this is, zones are in effect prior to 6:30 PM Monday-Friday.

Information about the 2010 Games Transit Pass is available here. This page also has a Fares & Passes link, which will take you to more useful info about transit for the 2010 Games.