He has worked on other National Geographic projects, including "Never Say Never with Jeff Jenkins," "Appetite for Adventure with Moe Cason" and "Extraordinary Birder with Christian Cooper", which was honored with two 2024 Emmy nominations.
Kroll has directed three feature films and produced dozens of television programs, including The Amazing Race, for which he was honored with a 2004 Primetime Emmy Award.
[citation needed] Kroll directed "From Hell to Hollywood,"[2] a biographical documentary about the life of Associated Press photojournalist Nick Ut whose 1972 Pulitzer Prize-winning photo is credited with helping to bring an end to the Vietnam War.
Kroll also produced "American Grit" and "Bullseye" for Fox, “The Week the Women Went” for the BBC and Lifetime, “Pit Bulls & Parolees” for Animal Planet, “Flipping Vegas” for A&E, "Big Brother" on CBS, High School Confidential on WE-TV, and From Star Wars to Star Wars on Fox.
[citation needed] Kroll's most controversial project has been "Amish in the City," a show for UPN that caused 51 members of congress to send a letter of protest to the network.