Baker has done voice work in video games for the Star Trek and X-Men' and guest starred in television shows such as That '70s Show, Early Edition, Yes, Dear and among other series. She also starred in the short-lived 1996 sitcom The Last Frontier, and voiced Lu Zhi in the 2010 game Age of Conan: Rise of the Godslayer Baker is also known to television audiences for her recurring roles as Hannah Webster in the first season of Charmed and as Ellen, the long-time friend of Grace Adler (Debra Messing) on Will & Grace, which she played since the show began in 1998 through to its last season in 2006. She is also known for providing the voice of Abby in the Nickelodeon animated series Back at the Barnyard. Baker has also made an appearance, along with her co-star Mia Talerico, on the sketch comedy show, So Random!
In late 2008, Baker appeared on several episodes of Hannah Montana playing Mickey, a morning show host. She is currently co-starring as Amy Duncan on the Disney Channel original sitcom, Good Luck Charlie.
Baker lived in Murray, Kentucky. She is married to an entertainment executive, Keith James Kauffman. They have two sons, Griffin, born on August 23, 2009, and Baker James, born on September 18, 2012.