Royal Pingdom has an interesting and amusing compilation of Web 2.0 error pages.

Of course, error screens sometimes contain what might be considered truthiness at best. My TiVo will show “Scheduled Maintenance” as its error when things don’t work. I suppose it’s more reassuring than “Oops” (and far better than the Java exceptions it spews in all of their failed-SOAP-call glory, when its Rhapsody connection is down, which is frequently).