After some time lurking on this excellent website, I never would have guessed that a thread about BLT sandwiches would move me to post, but here goes. Mel's Diner on Sunset Boulevard in West Hollywood has an excellent version of the BLT with the California twist of avocado on it. As JSE mentioned above, the addition of avocado makes it a truly special sandwich, but you also need the coolness of chilled iceberg lettuce, ripe tomatoes and great toasted bread to complete the taste sensation. Mel's is a tourist mecca, but they do BLT's right, IMHO.