I haven't. I was just before Nintendo and those things. I've heard it's good, I'm just not much of a console person.
Well, as
@Ryan B. says, it's generally considered to be the best on the SNES, and one of the best ever, period. Final Fantasy 6 gets mentioned in the same breath a lot; the scope of FF6 is much larger, and there's a lot more crunchy stuff going on (like roaming a specific grasslands for hours to get specific encounters to steal specific powers and items), but the plot is nowhere near as good.
I personally find Chrono Trigger to be an amazing achievement, because the hardware of the era was so limited, and yet they managed to implement such a modern-feeling game using it. In fact, in many ways Chrono Trigger helped define what a modern game even
is. However, like most games that are vastly influential, it doesn't feel groundbreaking anymore, because everyone else is doing the same stuff, better.
But it remains fun. It will not blow your mind unless you can mentally put yourself into 1995 mode, but it's a solid game with a neat story, memorable characters, and cute graphics. Thirty years later, it's still worth playing. And it has an astonishing amount of content for a 4-megabyte game. They must have worked
so hard to pack everything in there. I've had an image for many years of a bullpen of programmers, with one standing up and saying, "I saved ten bytes!" (in Japanese, of course), a bell ringing, and someone handing him a Snickers, or whatever the local equivalent would be.
edit to add: the litmus test I use for that game is the trial, which happens two or three hours in. Your character will be put on trial. After that finishes, if you're not smiling and having fun yet, the game's not for you.