You can watch the Pistons play any opponent you want in the preseason so long as its the Cleveland Cavaliers. From the team's press release earlier today:
AUBURN HILLS, Mich. --- The Detroit Pistons today announced their 2011 preseason schedule which will feature two games against the Cleveland Cavaliers. The Pistons will host the Cavaliers at The Palace of Auburn Hills on Friday, December 16 at 7:30 pm. The two teams will meet again on Tuesday, December 20 in Cleveland at Quicken Loans Arena (7:00 p.m.). Both games will be broadcast by Fox Sports Detroit and available on 97.1 FM The Ticket.
Those two games aren't part of the preseason schedule, they're the entire preseason schedule. Dan Gilbert's excited; are you?