1,000 Misspent Hours and Counting: http://1000misspenthours.com/index.html - El Santo is direct and to the point and pulls no punches on what's crap and what's not.
The Bad Movie Report:
http://www.stomptokyo.com/badmoviereport/ - Dr. Freex lends an experienced eye to b-movies. Heck, he even made one himself!
And You Call Yourself a Scientist?:
http://twtd.bluemountains.net.au/Rick/liz.htm - Written by an actual scientist, Liz brings some "real" science to "reel" science.
Cold Fusion Video Reviews:
http://www.coldfusionvideo.com/ - Nathan Shumate has a great writing style, and he sets aside the occasional video binge to a certain genre or certain actor. One of my favorite sites.
Jabootou's Bad Movie Dimension:
http://www.jabootu.com/default.asp - Some may think that Ken Begg's reviews are a bit long winded, but the man leaves no stone unturned and no faults hidden.
Badmovies.org:
http://www.badmovies.org/ - Another one of my favorite sites (and I'm not just saying that because he's a Marine and could kill me with his bare hands). Andrew Borntreger introduces you to the cast and points out the things you should look out for.
Dante's Inferno And All Night Video Store:
http://www.badmovieplanet.com/inferno/ - Dante is another one who pulls no punches when it comes to telling you whether or not a movie is worth your time.
The Tomb Of Anubis:
http://www.tombofanubis.com/ - The first b-movie site I ever read and got me hooked. It's undergone a revision or two since I first saw it, but for an Egyptian God Of Death, the guys not a bad reviewer.
Opposable Thumb Films:
http://www.stomptokyo.com/otf/ - You gotta love a guy who uses David Hasselhoff as his rating system!
Stomp Tokyo Video Reviews:
http://www.stomptokyo.com/index.htm - Chris and Scott provide not just an in-depth review to the King of Kaiju flicks (that would be Godzilla for those of you living under a rock), but all other forms of crap cinema as well.