This weekend officially marks the beginning of blockbuster summer with the release of The Amazing Spider-Man 2. Sadly, the movie is supremely disappointing, calling back to some of the elements that make Batman Forever a silly trainwreck (but more on that from our own Jeremy Kirk in his review later). If it wasn't for Andrew Garfield and Emma Stone, the movie would be nearly unwatchable. Thankfully, Garfield is charming all by himself, and as an end to a week of shows featuring the cast of The Amazing Spider-Man sequel, Jimmy Fallon sat down with the franchise star on "The Tonight Show", who was willing to show off his new guitar skills and belt out an acoustic version of the classic Spidey theme. Watch below! Here's Andrew Garfield singing the Spider-Man theme song from "The Tonight Show": And just for fun, here's Emma Stone partaking in an epic lip sync...