The gang recalls past experiences, including Donna and Eric's meeting; Jackie and Kelso's first date; and Eric and Hyde's...bath? Eric (at age 13): Brock Benedict. Donna (at 13): Nina Jeffries. Kelso (at 13): Ethan Peck. Hyde (at 13): Joey Zimmerman. Jackie (at 12): Alexandra Brandl. Eric (at 7): Brett Buford. Donna (at 7): Liliana Mumy.