Something About Guest Stars

What was up with all the guest stars on television this week? From the small amount of shows I watch I counted 3 stars in 3 different sitcoms. The first was in "How I Met Your Mother", which guest starred Danica McKellar as "Trudy". Danica played Winnie Cooper in "The Wonder Years." Next up was "According To Jim", which guest starred Linda Hamilton as Jim's ex girlfriend. Linda played Sarah Connor in Terminator 1 and 2. Finally we have "That 70's Show." Don Knotts guest starred as Fez's fantasy landlord. Don played Mr. Furrly in "Three's Company" and Barney Fife in "The Andy Griffith Show." Of all the guest appearances I think Don Knott's was the funniest.