This is all good advice. To that, I would add this: Pay attention to what causes you to get slowed down as you're going through. I've carried a number of odd items that have caused the TSA to flag me for a bag check - cheese, a game that contains hundreds of playing cards, a bowling ball, etc. When I'm carrying one of these items, I remove it from my bag and place it separately in a bin; if the X-ray operator can see it on its own, they usually won't call a bag check. Even if they do ask for a bag check, it only applies to that item by itself, which might get re-run or swabbed for explosive residue or something - meanwhile, your other bags make it through and you can start putting your shoes on and packing up your liquids while $agent does a brief check of $item (without having to search your bag for it).
As an example, take some cheese. (I was visiting home in Wisconsin, and needed my fix of good, inexpensive cheese, dammit!) It looks a bit like a liquid or an explosive. I can leave it packed in my carry-on bag, and sometimes they'd ignore it, but more often than not they won't. They call a bag check, so I have to wait for an agent to come over, then they have to wait for me to grab the rest of my items to meet them at the table. They dig into my bag looking for what the X-ray operator found (although they won't normally tell you what). Once they find it, they'll look over it a bit to make sure it's safe, then send both the bag and the item back through the X-ray, and then send me on my way if both look OK the second time through. On the other hand, if I take 10 seconds to pull it out of my bag BEFORE the X-ray, (and especially if I mention to the operator or agent next to the operator that I'm putting cheese through) then they don't need to do any extra inspection, although they may glance at the item on its way in or out of the X-ray tunnel.
Of course, all this is neglecting the best way to make it through: don't bring anything with you. Go to the airport barefoot, with no coat, belt, watch, or anything else. Check all your bags - hopefully you're flying Southwest so you don't have to pay for checked bags. The less you have, the less they are able to inspect. (Obviously, it's probably pretty difficult to do it to this extreme - but if you check a bag with your coat and liquids and belt, and only carry a tablet onboard with you, it's more likely to go quickly.)