Most theme park podcasts either imbue themselves with news (Season Pass), a sense of a panel show (Parkscope in particular), or a history show (Wedway Radio), and just plain fun, like the also highly-recommended Orlando United Radio. Well somebody recommended CR to be alike, and the recommendation couldn't be more dead on.
While OUR flirts with skits and only talks about the Orlando parks, Coaster Radio scans the entire spectrum of theme parks (mostly North America) and rarely excludes. This definitely seems to be the first and definitive theme park podcast, and takes the "radio" name to heart. Not only is the show polished by two obviously well-worn industry vets, Mike and the always-eager E.B., but it features Neil Patrick Harris as the show's announcer, they occasionally have ad breaks and like many crazy morning radio shows, you will be imbued with some surprisingly hysterical characters that infect the show with a surreal "1990s Conan O'Brien/Howard Stern" charm. Some are based on pop culture characters (Hagrid, E.B.'s impression of which will have you on the floor), some of which are characters of their own, such as Coasterboy, who despite sounding like Homestar Runner in a theme park, is a wonderful nudge at their audience. The message as always is to not take things too seriously, and CR never does.
The show is mostly news-based for the bulk of episodes but there are some fun game show pieces and interviews here and there. It's also quite old (10 years) and has an acquired fanbase (I just started listening a month ago and I've barely scratched the surface), however it doesn't seem that Mike and E.B. have succumbed to the recent affliction that talk show hosts have been suffering lately, and are totally gun ho on a long future ahead. So feel free to start at anytime, you'll catch up quickly.