Leave It to Beaver

Leave It to Beaver (CBS and ABC 1957 - 1963)

Opening Credits and Theme (YouTube) 

Leave It to Beaver Theme (Television Tunes website, downloadable)

Episode Guides:

IMDb Episode Guide "Leave It to Beaver" (6 Seasons)

TV.com "Leave It To Beaver - Episode Guide" (6 Seasons, with video links)

Wikipedia article "Leave It to Beaver"

Wikipedia "List of Leave It to Beaver Episodes"

Watch Video Online:

AOL Video Search Results "Leave It to Beaver"

Bing Video Search Results "Leave It to Beaver"

Google Video Search Results "Leave It to Beaver"

Extra:

SCTV Parody "Leave It to Beaver 25th Anniversary Party" (YouTube)