Hah, funny. I was just about to put up a similar post. Nothing funny about having a leak, however. I've had one for about 6 months, the worst was steady rain where i got about 2 inches in the driver's side floor pan. Thank god is wasn't the passenger side due to the amplifier and what not. What is it about the driver's side A pillar that's more susceptible to leaks?
OP - have you ever had the windshield replaced? I know mine was before I purchased the car, but it didn't leak for years after I bought it.
Stealthy - I've checked the drain opening in the sunroof well with the sunroof open. The drain is not visibly clogged, so I pulled the trim panel on the A pillar, but as I suspected, the drain runs internally through the interior of the pillar. Is there some kind of thin wire or tool you recommend to try and test the drain? Like using a rod on a "real" plumbing drain? It'd have to be then enough to fit through but strong enough to be rigid and push through. Solid copper electrical wire is the first thing that came to mind, like if I stripped some 12G or something similar.
Also - any hint on where the bottom of the drain is? I figured I could check from underneath the car also, but I have to admit I haven't got that far. The leak seems to be coming in behind the lower dash, just follow the pillar down, if that makes sense.
For years I've been parking indoors, at home and at work, and now I was transferred and have to park outside (not happy about the sunlight on the paint either) - of course the leak wasn't so pressing when I knew I was parked indoors.
Thanks in advance all. OP - good luck with yours, share any info you come back with and I'll do the same.