I did not know Limitless got canceled...!
No, you are not alone. Some others that come to mind are:
Rubicon
Lie to Me
Alphas
The Bridge
The Newsroom
I watched Alphas and The Bridge, it was a shame they were cancelled.
Some others that are great to binge, but were cancelled too soon are:
Terriers - the name doesn't make sense, but it is a great, well acted and written show.
Camelot - the Stars version - this was a popular show, but there were scheduling conflicts, so they cancelled it.
Firefly - a very unique show
Twin Peaks - very weird show, but good news, ShowTime is bringing it back with the original cast for season 3, 25 years later.
Being Human (US) - this show had 5 seasons I think, but the final season seemed rushed like it was cancelled too soon.
Angel - another show that had a few seasons but ended on a cliff hanger.
Chuck - a great show to binge but it ended a little too soon.
Dark Angel - Cancelled way too soon.
The Riches - Cancelled due to a writer's strike, ended mid season without an ending.
Revolution - it takes a while to warm up to this one, as the beginning is a little goofy, but mid-first season, you will be hooked. It was cancelled without an ending, but the creators of the show published a free online graphic novel of the final season.
All good shows to binge on, just cancelled too soon and might leave you wanting more. Maybe I will think of more and post them later.