To watch Star Wars in ASCII.
telnet towel.blinkenlights.nl https://www.youtube.com/watch?v=Mhcf6tc2jeQ
(Remember hearing about this a long time ago (from some searching I think it was in 1999 via Slashdot) and verified some instance of it still exists/works.)
It might be the telnet filtering in action. The host responds to ping but I get nothing back on TCP/23, not even a reset.
It's still working over IPv6
~~IIRC the blinkenlights telnet movies have been offline for a few years already.~~
I connected a few times today to the IPv4 one. Have had no problems myself.