#1 - St Stan's in Modesto, California. Tasted my 1st craft beer there in 1984, an amber ale and didn't know beer could be so great. Toured a few times including the hop barns. Sadly it sold out and closed but there's still a restaurant by the same name.
#2 - Was Sierra Nevada. The Pale Ale was almost exactly like St. Stans circa 1980's. However when they sold out and moved to Chico in the early 200's the "micro brew" became a commercial beer on every shelf in America and lost it's original freshness. Used to buy and drink it weekly for years, then the new commercial version started giving me a head ache so quit buying it.
Both of the above inspired me to make my own.
# 3 - Current favorite - Crazy Mountain in Edwards Colorado. Their Mountain Livin' Pale Ale with Cimcoe and Citra hops was an inspiration to replicate (which I did) and get a large chain in Texas to stock it just for me. A happy naturally citrus ale with cutting edge new hops. Lip smacking.