Register for the Alaska Airlines 10 million mile giveaway. It’s explained here. You do have to fly Alaska Airlines to enter though. Well, except for the obligatory method of entering without purchase:

By mail without purchase or obligation or without being a member of the Mileage Plan program and to receive two entries: on a 3″x5″ card, handprint your name, address, city, state, zip, e-mail address, daytime and evening phone numbers, and the words “Alaska Airlines 10-Million-Mile Giveaway” and mail in a # 10 envelope to, Alaska Airlines Giveaway, P.O. Box 4035, Grand Rapids, MN 55730-4035. All entries must be in a separate envelope and mailed separately. All mail entries must be postmarked by December 15, 2003, and received by December 22, 2003 to be eligible. Please note that you must indicate which daily drawing you wish your entries to be included in by handwriting the day of the week & date (i.e. Monday, 10/20/03) in the lower left hand corner of the mailing envelope. The day & date must be between 9/7/03 and 12/15/03. No photocopies, reproductions or facsimiles allowed. No entries generated by script, macro, or other automated means are allowed.