5-12: Bride of Chaotica
When Photonic aliens mistake the Captain Proton holo-program for reality, Janeway gets into character to save Voyager.
Seven of Nine is recruited by the 29th-century starship Relativity to save Voyager from destruction.
5-04: In The Flesh
Voyager encounters an exact replica of Starfleet Headquarters on Earth; a training facility for an invasion.