Google's Matt Cutts, who is currently on a long vacation, has migrated his personal blog at mattcutts.com/blog from HTTP to HTTPS sometime over the past few days.
The interesting part is that he used a 302, a temporary, redirect, and not a 301 redirect for the migration.
All the URLs from HTTP to HTTPS on his domain name redirect to the HTTPS version but respond with a temporary redirect server response and not a 301.
Matt's certificate is from AlphaSSL CA - SHA256 - G2:
In early August, we reported Google is giving a minor ranking boost to HTTPS sites. Matt Cutts has previously said he was pushing for it but has personally not migrated his site until now.
I believe Matt is currently on a cruise somewhere in Alaska?
Forum discussion at Google+ via +SunnyKUjjawal.