I’ve seen a bunch of recipes for this lately, but I actually got the recipe from a guy at work who makes it all the time.  Feta guac is creamy.  It’s delicious.  Just make sure to wait five minutes for the flavors to meld before you decide whether you like it; when I first made it, I was so disappointed.  It just kept getting better and better, though.

Feta Guacamole

Five perfect avocados (do not attempt this or any other guacamole recipe without perfect avocados)
2/3 c feta cheese, crumbled
1 tomato, seeded and diced
1 chile pepper, variety to taste (used Anaheim; the other ones looked kinda mushy that day), seeded and chopped
1/2 bunch of green onions, sliced thinly
1/4 bunch cilantro, chopped
Juice from 1 lime
Extra-virgin olive oil

Mix the tomato, pepper, onions, cilantro, lime, and salt together. Let sit for 5 minutes and adjust seasoning if necessary.

Dice the avocados; do not mash. Add cheese and avocado to salsa mix. Add a few tbs of olive oil to stick everything together. Wait five minutes, and adjust seasoning.