DNS Stuff: DNS tools, WHOIS, tracert, ping, and other network tools.
This 1 page site consists of over 15 very useful tools for SysAdmins, email admins, network troubleshooters and geeks of all flavors. Should you experience wierd problems with some sites you control, the tools here might come in very handy.
Track the status and arrival time of airborne flights in North America: Cheap Tickets - FlightTracker
This site comes in handy when you are trying to figure out where in the world your friend is when you are trying to pick them up.