This has been making its way around the internet this week, but in case you didn't see it here's Ryan Reynolds making a kid's day at Comic-Con. While on the Green Lantern panel, Ryan is asked by a young fan what it feels like to say the Green Lantern oath.
Interesting side note: when I went looking for this video last weekend, the search terms "Green Lantern Comic Con" returned one instance of this clip and four separate videos of Blake Lively's appearance on the panel with titles that indicated there was some sort of wardrobe malfunction. (I didn't watch the videos to confirm.) This proves that as much as comic book geeks will go crazy for the Green Lantern oath, boobs always win in the end.