For its 15th birthday, Google is throwing itself a loving party, a nostalgic trip down memory-of-itself lane, a celebration of its rise from humble search David to search Goliath. And we're all invited. Go to Google.com, type in "Google in 1998" and hit the search button. What do you see? We see little baby Google, its logo all Sesame Street-looking, a list of search results for Web pages that mention Google, and (perhaps most nostalgically of all) not much else in the way of whistles and bells.