Stephen Colbert is giving the commencement speech at Northwestern this year. To celebrate the announcement, here are some of the top Colbert moments:

1. Stephen Colbert Christmas Special

2. Stephen Colbert Keeps Character in Congress

3. Stephen Colbert at the White House Correspondents’ Dinner

4. Stephen Colbert’s Light Saber Green Screen Challenge

Here is one of the entries:

5. Stephen Colbert Presents an Emmy