if you want spoilers then move all of the gibberish one key to the left
the puzzle that made me feel the smartest was the one with yjr vsmmpm smf yjr pyjrt od;smf.
my favorite ;smyrtm ;pvsyopm was the C ,sfr pg h;peept,d pm yjr ;ohjyjpidr od;smf ejrtr upi jsf yp ,pbr gst sesu dp yjru djpe i[.
Edit:
I also liked the puzzle that esd vsmmpm [;id pyjrt od;smf [sty yep r;rvytov npphs;pp.