One last note, In-N-Out costs less than McDonalds. A quarter pounder with cheese meal will run me $6 at McDonalds and I can get a double double with fries and a drink for $5.25. The price is part of the appeal. Also, note what I said above, Fatburger and In-N-Out make different products, they just both share the name hamburger. They aren’t really the same foodstuff.
Wow, thanks for the link! The only secret thing I knew about was “Animal Style”. I like lots of cheese on my burger, so it’ll be the 2x4 from now on. And I always felt that the fries, while good, had just a bit of a mealy consistency to them. “Well done” fries sounds like the way to go.
I had always avoided “Animal Style” because I’m not crazy about thousand-island dressing, but on an In-&-Out, it actually works! “Animal Style” on the fries is a bit much, tho’.
Fatburger used to be a lot better years ago, IMO. Still better than most, but it pales in comparison to I&O.
We have several I&O’s here in Vegas, and two within a mile of my house. It mystifies me that anyone would even consider Mac’s, BK, etc. with all this good burger action here.
Crap! It’s only 8:40 AM, and now I’ve got the In-&-Out jones big time! Thanks a lot, guys! 
Just one more hijack…
You cannot visit LA without stopping at least once at Barney’s Beanery. Best chili in the world, guacamole that will knock your socks off, and burgers that will make you weep with joy (go to page 5 on the online pdf menu). There are apparently now 4 locations, but for the true BB experience, you must go to the West Hollywood location (the original).
And did I mention at least 150 different brands of BEER?