i have a wealth of video conversion tools on my Mac, but CosmoPod is the one i use most often as an easy way to grab and convert web video if it's going straight into iTunes. minimal configuration needed, it just works. this is the software i recommend to friends and family who don't have the technical knowledge to tweak video conversion settings. it's also well-priced for what it does.

i have not had any of the crashes or issues others have reported here.