Fun With Words: Pangrams - Gives a number of examples of pangrams, or sentences that contain every letter of the alphabet.
Fun-With-Words.com: Pangrams - Collection of pangrams under 50 letters. Submit your favourite pangrams for consideration.
Pages of Pipes: Pangram Page - It's much easier to construct pangrams in Japanese because, according to Akira Okitsu, every Japanese letter has vowels.