Q19: Are the rumours true about Radar O'Reilly having a deformed hand?

A19: Yes, a couple of the fingers on Gary Burghoff's left hand are smaller than
    normal.  This is well hidden from the audience though, as just about
    every scene has Radar conveniently covering up his left hand or holding
    something with it.

Q20: Who owns the faceless voice that does all the P.A. announcements?  It
        usually isn't Radar or Klinger.

A20: There's Sal Viscuso, from "Soap" fame (was shown in one or two MASH 
        episodes (check the ever-so-handy Episode Guide), though he wasn't playing 
        his P.A. announcer character), Todd Susman, from ah, "Operation
        Noselift" fame, and Jimmy Lydon was the missing *third* voice. Viscuso and Susman 
        were the most commonly known ones.

Q21: What is the name of Radar's teddy bear.

A21: The most dreaded question of all on alt.tv.mash. The answer is simple: It never had
        a name. As far as I know, Radar's teddy bear hasn't been referred to as anything
        other than "bear", "teddy bear", etc.