In conversation, when I agree with someone, I almost always say "Fair enough," enough so that people I work with sometimes say it along with me when they see me winding up for it.

I have weaned myself from its use a bit, but I'd not mind being a mite less predictable in what I'm going to say.

And for many years, "amaaaazing" was how I described anything positive - drove me nuts, but I couldn't stop - I think I used up my allotted quota of word-usages for that one, however, because I rarely say it now.