We at Mashable spend long hours scouring the web for the latest and greatest memes and videos, so it's only natural that we come across a lot -- and we mean, a lot -- of GIFs each week.
Today we are introducing a new feature that highlights the best GIFs we've seen all week. From Obama and his crew celebrating the endorsement of same-sex marriage to the Avengers, an NBA photobomb to a delightful waving elephant, here's a roundup of our favorites this week. Check out the gallery above.