Yes. I was also going to say this.
Phantasmagoria has an "head assistant" that gives hints when clicked.

"Solid Gold" releases of a few Infocom adventures had that.
A lot of (most of?) modern "casual" adventures have those systems.

I hate hint systems, seriously, I can never fight the urge not to hit the key. It takes all of the accomplishment out of the game too.

"The Hitchhiker's HGuide To the Galaxy" (old Infocom text adventure co-written by Douglas Adams himself, highly recommended) had an in-game hint system and may have been one of the first adventures to include this feature.

only if you meant in the form of "what are you an idiot?" level of help? or do you mean the later reissue/bbc version?

Big Brain Wolf has one. It is off-beat Layton style indie game.

The version I meant had a context-aware, menu-driven hint system. The player could select a question from a list, and then received a cryptic hint about how to solve the problem. If he was still stuck, he could access further hints for that problem, which were increasingly more direct.

This version was the "Solid Gold" re-release. The original game did not have this help system (after all, Infocom wanted to sell its Invisiclues). The bbc then re-released the Solid Gold version (without any changes AFAIR). So I didn't mean the bbc version, but the earlier Solid Gold release that the bbc version was a copy of.

Correction: I just checked - apparently the bbc version was built with the earlier release of the game, the one that didn't have the hint system. Not sure why they didn't use the Solid Gold release.