Thanks to all of you who helped come up with some cute names! Here they are in alphabetical order:

Biscuit • Charlotte • Crawly McCrawlerson • Downspider • Eensie-Weensy • Flo • Frank • George • Gold Man • Golden Spider • Goldie • Goldie Doorsie • Goldy Spidy • Joe • Neatto Netto • Nitty Gritty Netto-Grosso • Roscoe • Roxie • Silence • Wacky Spidy • Wonder Webmaker

I loved them all, but after hours of careful consideration, our darling doorway spider has now been named...

Roscoe Frank McCrawlerson!!
Hooray!!! :D

Honorable mentions to:
Biscuit: can't choose this because this is one of my parrot's nicknames!
Charlotte: I love this name but this spider will grow up to look very different than the Charlotte we all know and love ...this one will have prickly hair all over its legs, and that's not very lady-like, is it?! :D (BTW, Charlotte's Web was one of my favorite books as a kid and I loved both movies!)
Flo: I like this very much, but since my first two favorites were male names, our little spider might be confused having both boy and girl names! :D
George: can't pick this because this is the name we call all the Blue-Belly Lizards we see running around! :D
Gold names: They are all so nice but you'll see that in proper lighting, this spider does not look golden, though he or she IS quite a golden treasure to me! :)
Joe: LOL, Joe, you may not name a spider after yourself! :D Bad Joe! Go stand in the corner! :D
Roxie: I love this name but you also picked my favorite name and it's important to share! :D

By the way, I uploaded another picture of Roscoe showing his size compared to a dime...I think you'll all be pretty amazed how tiny he is!!