1. Sipping a cup of coffee at 1369 in Cambridge while listening to two MIT researchers chat about genome sequencing.
2. Emerging from the tunnel in Back Bay and seeing the zany, crooked skyline of oddly-shaped buildings looming over the Pike.
3. Seeing that the swans are back out at the Public Gardens and knowing spring is here.
4. Spotting the Superfans during a C’s game (and partying with them afterwards at the Harp).