Yes, she does talk about buying things like fresh herbs and getting them prepped for future use, but that is as a suggestion for having a well-stocked kitchen, not for what she is doing. If you watch the show, you see that she simply pulls a bunch of parsley out of the fridge, still in the plastic bag she would have put it in when it was bought from the store. But, I don't consider wrapping a bunch of herbs in a paper towel "prep" anymore than I consider unwrapping a stick of butter and putting it in a butter dish to be "prep."
If you read her 30 Minute Meals cookbook, she gives a list of what a well-stocked kitchen should have (a package of long, thin pasta, a package of short pasta, a package of long grain rice, chicken stock, beef stock, etc.) so that when it comes time to make dinner, you can easily make most anything you want because you already have the ingredients. That's the point behind her commentary about handling herbs: Buy them when you see them fresh in the store and buy a little more than you need so that you can put some away for later...and put it away in portions that you will use so you don't have to prep it later. She does try to give you tips during the show about how to use the particular meal as a technique for other dishes.
About the only other trick I've seen her do is the garbage bowl, which is actually a good idea no matter what: Rather than try to use the sink and the garbage can, etc., just get yourself a big bowl and throw everything you're not using into it: Cans you've opened, squeezed lemons, the cut off root and blossom ends of an onion along with its paper, etc. "Clean as you go" is a good idea, but clean into one spot. You can throw it all out in one go when you're done.
She has said in interviews that the idea for 30 Minute Meals came from her previous job as a demonstration chef. She would be working for a cookware manufacturer doing a demonstration at a mall or such and would need to put together something that showed a complete process but also not take too long. She's been doing the 30-minute schtick for quite some time and it is clear she is well-versed in it.
As for her personality (hand gesture), I (hand gesture) can understand (hand gesture) why some people find it annoying (hand gesture). But that's a question of presentation (hand gesture), not technique (hand gesture).