Yes, after running for 24 years (making it the longest running American comic series in history), this week Sega and Archie officially announced that they have cancelled the Sonic the Hedgehog series as well as it's spin-off series Sonic Universe. If you were a fan of Sonic as a kid, there's a good chance you followed this series at some point in time.
The Sonic series ran for 290 issues before it was unceremoniously cancelled (meaning it never got a final story arc) and if you include all the side series
32 issues of Knuckles the Echidna
94 issues of Sonic Universe
17 issues of various miniseries
13 issues of it's one-shot specials
15 issues of it's Super Special series
40 issues of Sonic X
11 issues of Sonic Boom
make for a grand total of 512 comics. And that's not even counting the issues of the Mega Man series where Sonic and Mega Man did a whole crossover thing.
So, in remembrance of a series that had dizzying heights of awesomeness (as well as terrible lows), feel free to post something you remember.
A final note, a couple of days after announcing the cancellation of the Archie Series, Sega has announced that they have partnered with IDW to create a brand new Sonic series.