Okay.. I've been doing this Black Friday gig for the last 3 years.. Last year was cool as I had a team-mate! Definitely get one if you want to hitup more then one store.. Older kids are great for this.. Hey, they gotta serve some purpose, right?
With respect to the Apex 27" TV.. My team-mate last year was stationed outside Circuit City to snag 2 of these babies for $120 each while I waited over at BB. Both TV's were gift items and shipped out of state. Here's the warning.. The first TV's Tuner failed within a month, the second TV's Tuner (shipped further mind you) failed within 6 months.. This kinda ticked me off.. I also had purchased a Apex DVD player at CC a few years ago for my mom, it failed earlier this year. The TV's didn't come with a waranty card or contact info either. So I'd steer clear of Apex stuff..
One thing I noted last year considering I stayed up all morning, and all day, was bearing the cooler weather and initial lines is far better then trying to battle the lines and wore out employees later in the day. For example, I waited in line before the store opened, when I got to hit the entrance, I bumrushed what I wanted and hitup the line.. I had my stuff within 5min, and spent another 30 or so in line to checkout. Later that day, I walked back in to see methotical lines placed everywhere, wore out employees (which were very nice that morning) and @$$ customers who were pissed because what they wanted was either gone or they had to wait in line for anything to happen.
I ain't gonna reveal any secrets of BF other then two things.. Know what you want, and the early bird gets the worm..
I'd also advise against trying to pricematch, a couple places are cool about it, the rest aren't that helpfull.. Unless the place your at vs the place with the best price is out of range geographically, I'd just drive around hitting up place by place. Helps if you have a wife or gf with a car as you can split up.
So, get stuffed (with dinner), powernap and wear warm clothes. Remember to bring your patience along with you, it helps.. Rememeber, everyone's in the same boat as you, there's no need to get nasty.
Happy (early) Holidays!