A Partial Dictionary of the 21st Century by sam-storyteller (copperbadge). Steve is adapting well to the new millennium, and he has the dictionary to prove it.
Status: One-shot. Complete.
This is a lovely fic which shows how Steve is changing and adapting without falling into a lot of the cliches (like the actual comics do...). It's very well written and gives a great sense of Steve and the rest of the Avengers.