Another fun themeless! Beginning with 1A: Light shower (PRISM) (A), we're off and running. I love the surprisingly literal clue for SMITH (17A: Skilled forger), and the simplicity of "20A: How the operas 'Artaxerxes' and 'Iolanthe' are usually performed" (INENGLISH). What's more - OPERATIVE (16A: Private detective) is perfect for us because we just finished watching "Tinker, Tailor, Soldier, Spy" (Gary Oldman is very good) less than an hour ago.
Nice pair of "tone" clues ("lose tone" and "lose tones?") leading to SAG and GODEAF. And speaking of that, I didn't particularly love the "ear malady" mini-theme of that last one and OTITIS.
I tried proudWOMAN, then nakedWOMAN, before getting HORSEWOMAN for 27D: Lady Godiva, for one. Sort of arbitrary, that. Like CUPSOFCOCOA and OPENCOILS, but I don't really mind. This was a fun puzzle with very little junk. Even PMS got a somewhat more interesting clue (1D: Residents of 24 Sussex Dr. in Ottowa).
Favorite clue/answer? 4D: Job tester (SATAN). No question mark. Excellent.