If you are yet to take the plunge to Leopard OS X, perhaps Micro Center's excellent $40 rebate on all Leopard OS X purchases shall convince you?

That's right, until 11/11 all qualifying purchasers will be able to claim a $40 mail-in rebate, the application form is available for download on Micro Center's website. Hit the link to save yourself some bills on your next big cat. [Micro Center via Zats Not Funny]