Here are some decent deals I just found on Sears, which currently has Friends and Family going on (including an extra 5% off 40" or larger HDTVs that ends 7 AM CT on 12/3). I think all of these have Free Shipping, although you can always pick up in store (if available) or sign up for SYWR Max for a trial period to get FS.
Sears gets you 6% FWCB right now.
Obviously, you can use a Sears coupon for at least another $5 off. And maybe some of those SYWR points you've been hoarding. (I just received an email granting me $3 expiring tomorrow.)
Panasonic 42" Viera® Plasma HDTV TC-P42X5 (720p) - $378.10 -- actually, this is only 5% off for F&F (not a great deal)
I particularly like the two 42" models for just under $380. Note that these all look like CCFL-backlit, vice LED.