I like to use Columbus, Centennial, Simcoe and Amarillo for my House IPA recipe. For the dryhop I use equal proportions of Simcoe and Amarillo. I use the Columbus at 60 and 30min additions.
I use all of that as well, and columbus at 20 and 10 and 0 minutes and dry hop. I love columbus. Intersting denny says columbus and mt. hood. I like columbus and french strisselspalt and/or crystal as well.
+1 I really like Columbus with Crystal. Actually, I could combine those two hops with prett much anything and would probably make a good AIPA.