This is probably not technically a street date break. Best Buy and Amazon had both contracted to street Rocky & Bullwinkle a week early (a
Video Store Magazine article will testitfy to that).
The store named here is advertising both "Mr. Show: S3" and "ER: S1" in their flyers - which is available to view online - a week earlier than everyone else...they probably made a similar deal with Warner Bros. After all, this chain likes to have "exclusive" stuff. Usually in the form of Bonus Discs, but early releases are cool with them, too.
I'm very positive this is legit.