Lay's. Partly influenced by a successful ad campaign during the 1960s starring Bert Lahr. [yt]http://www.youtube.com/watch?v=mj7Rq_gpAqA[/yt]
Kettle Brand Kettle Chips are fucking AWESOME. Cheese flavored Sun Chip, Doritos, Ruffles, and Baked Lays are awesome, as well. I also like Pringles and Miss Vickies plain chips. Basically, my favorite potato chips are the ones that happen to be in front of me at the time.
Pringle Jalapeno which which you can only get here in Asian grocers. They also carry some other flavours of Pringles that escape me atm that you can't get in non-Asian stores.
Fat free low salt Pringles are my enemy. I can finish the can without knowing it. I can finish the second can without knowing. Lucky for me they're hard to find on my area.