Check out this excellent research resource: the Best Paper Awards in Computer Science, a collection of the best paper awards of some of the major computer science conferences since 1996 by Jeff Huang.
This listing contains a couple of the conferences that I’m interested in, especially PLDI; however, it’s a shame that it does not collate POPL‘s Most Influential Paper Award (presented annually to the authors of a paper presented at the POPL held 10 years prior to the award year).
It’s also of interest to see the institutions with the most “best papers”.
Digital, Data & Policy 
Also, check out this list of acceptance rates of compiler conferences.