I'd probably have a tendency to steer people toward "funny" books if I was asked.
PAD's X-Factor (both the old and current)
PAD's Young Justice
PAD's Captain Marvel
PAD's Hulk (anyone sensing a pattern here?)
Busiek and Perez's Avengers
Brubaker's Captain America
PAD's Fallen Angel (there he is again!)
Nextwave
Watchmen
PAD's Supergirl (don't want her to feel left out)
Seriously, I'd probably just tell them to read anything by PAD.