Ah, home ownership. Walked into the kitchen in stocking feet and got wet feet. Everything under the sink is wet. Cleaned everything up and found it's the pull out extension hose that's leaking near the end. When it's retracted the leak runs along the hose to under the sink.
Good news is I can still use the faucet, just need to pull it out past the leak. Combo of good/bad news is the part for this 25 year old German faucet is available for only $20 or so. Bad part is that suggests I should do it myself. Tight space to work and I am a septuagenarian with bulged discs in my neck. Looked some and it does have this cool push/pull quick connector thingy so no wrenchy wrenchy work under the sink.