(Not grammar, and it doesn't make me cringe.)
In a similar vein to answering questions with 'Look...' and 'So...', I've noticed that 'I mean...' seems to be on the rise. Like 'So', this isn't an expansion or clarification or continuation on an earlier reply. I think I've noticed it most on American podcasts, but I've a feeling it's a grower: I found myself doing it yesterday. Apologies if this has already been covered.
Also, 'reticent' seems to be making a bid for the ground occupied by 'reluctant',and that does make me cringe. A bit.