Shameless self-promo aside ;) -- I generally enjoy all the blogs featured on LA blogs aggregator Digesty LA http://la.digesty.com ~ but take particular delight in Sarah's whimiscal "The Delicious Life", the wonderful pictures of "Potatomato", seeing Aubrey/Celeste "What's to Eat LA" & Javier "Teenage Glutster" as they discovered hidden, affordable gems in the area, the fun rantings and ravings (occasionally audible from their occasional podcasts) of "Gastrologica", and the community conversation that takes place in "la.foodblogging" (run by Jonah, the same guy behind Digesty).
Of the more commercial variety, I like LA Eater & The Knife for the LA food biz gossip (what's opening, what's closing, chef shuffling to and from where, etc.), and the LA Times' Daily Dish blog have pretty good, fun reads too.
Also, a thumbs up to Caroline on Crack - who not only dishes out nice food-related entries but also great stuff about shopping deals and the hottest nightlife going-ons.
For more the more single-variety oriented stuff, I like the Great Taco Hunt whenever I'm up for discover new taco joints/truck, and rameniac should I get a cravin' for noodles.
Finally, I also love OMG Food by PoetKitty & ColleenCuisine (a.k.a. Pinkberry's unofficial PR Lady), though their blogs have been on hiatus as of late -- crossing fingers that both will return soon.