Back in the days of Windows 3.1, a friend of mine gave me the screensaver package After Dark (home of the world famous Flying Toasters) which as fun. Later I got hold of the Star Trek edition (based on the original series) complete with sound bites, which was still my favourite screensaver package ever.
Oh my God, I had the same things, back in the day! Loved the toasters, and I later had a whole Trek "theme" on my computer, with icons, pointers, sounds and screensaver. I miss it.

These days, I usually just use the Windows photo screensaver with pictures from my most recent vacation or of my pups. Right now, it's our Caribbean cruise from last December. Hmmm ..., might be time to change that up.
I hear ya.
Unless I squint at the power LED, I find it hard to tell if it's monitor is off, the computer is off, or if the whole thing is on standby (although on standby the power button does flash orange). (One odd thing happened one day: the computer went into standby overnight as usual, then in the morning it turned itself on then switched off immediately. Very strange. But I digress.)
(I'd have preferred a 30s-style iris-out, though. 