Well,
Just charged my 2G iPod Touch (I hadn't charged and powered this up in awhile) it's still working and tried it today, again, on my iMac, with latest iTunes, known good 30 pin dock connector and nothing.
iTunes won't see it even when I launch iTunes manually.
Plus, I have photos on this iPod and even iPhoto won't even launch and won't still see my iPod when I launch iPhoto manually.
That is why I got frustrated with it last year with this thing not working any longer with my iMac and went and purchased a new 6th gen iPod Touch.
That because my 2nd gen iPod Touch was only an 8 GB model and my new one is a 64 GB model, now.
No issues.