In the past few years Jeffrey has proven to be one of the most versatile voice over artists in the business. His ability to go from the hip/cool sound to the more authoritative and quintessential sound makes him a valuable asset to any network or ad agency. His sarcastic, yet playful narration has given him the opportunity to talk about some of the most influential shows and celebrities in TV history. Some of these include American Idol, Grey's Anatomy, The Simpsons, Supernatural, Ghost Whisperer, Days of Our lives, Wheel of Fortune, and Michael Jackson. He has done promos and narration for TV Guide Network, HGTV, Nickelodeon, NHL Network, Food Network, A&E, Style Network, Cartoon Network, and many others.

In the commercial arena, he has been the announcer on numerous campaigns. He has also become a go to guy for radio commercials that call for "real" sounding characters in scripted spots.

Jeffrey is a graduate of NYU, Tisch School of the Arts. There he received his BFA in Theatre. He is represented by top talent agencies in both LA and NY. With his home studio, Jeffrey Holz sends broadcast quality voiceovers to anywhere in the world.