Here are some of his notable works:
Movies:
* The Prince of Egypt (1998) - as the voice of "The High Priest"
* The Lion King II: Simba's Pride (1998) - as the voice of "Scar"
* The Princess and the Frog (2009) - as the voice of "Lawrence"
* Tangled (2010) - as the voice of "Vlad"
* The Smurfs (2011) - as the voice of "Grouchy Smurf"
* The Smurfs 2 (2013) - as the voice of "Grouchy Smurf"
* Justice League: The Flashpoint Paradox (2013) - as the voice of "Cyborg"
* The Lego Movie (2014) - as the voice of "Lord Business"
* The Lego Batman Movie (2017) - as the voice of "Aquaman"
* The Grinch (2018) - as the voice of "The Grinch"
Television:
* The Cleveland Show (2009-2013) - as the voice of "Cleveland Jr."
* The Boondocks (2005-2014) - as the voice of "Huey Freeman" and "Riley Freeman"
* Family Guy (1999-present) - various voices
* American Dad! (2005-present) - as the voice of "Stan Smith"
* The Penguins of Madagascar (2008-2015) - as the voice of "Maurice"
* Teen Titans (2003-2006) - as the voice of "Beast Boy"
* Justice League Unlimited (2004-2006) - as the voice of "Cyborg"
* Batman Beyond (1999-2001) - as the voice of "Big Time"
This is just a small sampling of his extensive work. He is known for his deep, gravelly voice and has lent his talents to numerous animated series, feature films, and video games.
If you're interested in learning more about his work, you can find detailed information on websites like IMDb and Wikipedia.