As if anyone needed a reason to visit the one, the only Wally's Roast Beef (8120 Penn Av. S., Bloomington, 952-884-4349, www.wallys roastbeef.com), here goes: the daily specials, in the form of a $2.99 sandwich. On Monday it's a pork tenderloin; Thursday means grilled ham-and-cheese, and every Saturday, owner Jeff Sagal offers a real doozie: two roast beef sandwiches for $5.99.RICK NELSON