 Several casting changes were made as a result of the five @-@ year jump . Neal McDonough 's involvement was announced in July 2008 . McDonough did not audition for the role of Dave Williams , but was offered it after meeting with Cherry . Gale Harold continued appearing as Jackson , Susan 's new love interest , after appearing briefly in the <unk> segment at the end of the fourth season . The roles of the <unk> children were recast in order to reflect their new ages following the time jump . Charlie and Max Carver replaced Brent and Shane <unk> as Preston and Porter , respectively . The <unk> twins appeared in a flashback in this episode . Joshua Logan Moore was cast as Parker , a role previously played by <unk> <unk> , and Kendall Applegate joined the cast as Penny , who had previously been portrayed by several <unk> actresses . Despite their casting announcements alongside the Carver twins , Moore and Applegate did not appear in " You 're Gonna Love Tomorrow " . The <unk> segment at the end of the fourth season also introduced <unk> Say and <unk> Baltodano as Gabrielle 's daughters , Juanita and Celia , respectively . Only Baltodano continued portraying her role for the fifth season ; Say was replaced by Madison De La Garza during the summer hiatus . 
