I like the one from season 4 where Kris goes to jail, there's a fumigation scene, a big dyke who gets interested in her.
There are a lot of "solo" episodes during this season, where one Angel does a lot of the work and the other two are incidental.
Also the one with the attempted murder-by-herbal-wrap that takes place at a spa, with Mercedes McCambridge.
Watch Shelley Hack as a streetwalker!
The Kim Cattral guest star one is fun, as is the one where Kelly gets strung out on heroin.
Also it's worth watching at least one of the handful episodes where Sabrina and Kris have to team up, knowing the backstory that Jackson couldn't stand Ladd. Pretty much they were able to work around this, with Sabrina-Bosley + Kris-Kelly pairings, or Sabrina-Kelly + Kris-Bosley (Ladd loved Doyle almost like a surrogate father). To their credit, there is a poignant moment when Kris shoots someone dead for the first time and Sabrina comforts her.
As soft as it is, sometimes the show will be violent in a way that is completely unexpected; you snap out of the viewing coma and think, "well, you'd never see that on tv today."
You'll notice how badly staged a lot of the special effects are (speeding up the film to make cars go faster) and how cheap or low tech some things are done. Cars explode at the slightest provocation. Sometimes the Angels are helpless women in distress and then suddenly they flatten a towering athletic man with one karate chop--sometimes in the same episode!
You'll tire of seeing the swing set that's reconfigured and redressed over and over again: the one with the little kitchen with cabinets and counter and bar on the upstage wall.
Also, you'll pray that Allah will save you from ever having to hear another original song written by the series writers (who must have been frustrated songwriters--always cramming their dog songs into episodes).
Most glaringly, time has not been kind to the detection and undercover methods--most of their covers would be blown with a simple Google search today. And they're never shy about appearing together in public even though their "covers" wouldn't likely know each other.
Where's Season 5 on DVD? That's the real question.