PlayOn Mobile

PlayOn is an Internet-TV service that slings shows from your Windows PC to your game console, various media center boxes, and, now, your iPhone. Its impressive, unparalleled channel lineup includes Hulu (the free, nonpremium version), Amazon VOD, CBS, Comedy Central, ESPN.com and ESPN3, PBS Kids, CNN, and MLB.tv (which requires a subscription). The app itself is pretty stark, but it works--and it's amazing.