Morpheus 02 wrote:
The character of Ben in 10 Forward, in his mannerisms and how he acts, seems a whole lot like Guinan.
The lines were originally written for Guinan, but Whoopi was suddenly unavailable.
There was an intention, in the early planning of DS9, that Guinan's son might be imprisoned there, this giving the writers an opening to use Guinan on that series. Ultimately, they ended up with Martus Mazar, who used his El-Aurian talents (and canonizing the name of Guinan's species) to cheat at Quark's.