YTV is running a contest throughout the month of June in which viewers have a chance to win a weekly prize pack of Transformers goodies, which will be changing every week (this week's prizes are the Leader Class Optimus Prime figure, the Optimus Prime Battle Rig blaster and Optimash Prime.)
To enter, watch the Zone programming block (4pm-6pm PST) from May 29th to July 6th and be the 25th person to go
here and enter when a transforming vehicle appears on screen to win a prize package. All entries recieved between May 29th and June 18th are also eligible for the grand prize: a private advance screening of the upcoming
Transformers Movie in the winner's home state.
Full rules of the contest can be found
here.