Dave,
Glad it went well!! Didn't want to be reading about you in the Safety forum...
A couple questions on your implementation technique.
When you said you put a T in to connect the downspout, did you connect that to the pipe coming off the house at the 45? How much fall is on that pipe coming out at the 45? I'm just asking to see if it's possible for water to backup into your new tile.
Did you cover the end of the pipe that dumps into the yard with the cloth also? If so, you're probably going to want to remove this. Leaves coming down from your gutters will clog that pretty quickly. You will want some kind of cover to keep varmints out.
Since you got all that spare dirt, is it time to put some tile in that ditch near the road, connect everything up and cover?
Where's the pictures?!?!?