I'm not a marine guy, but one might possibly make a case by the letter of the rule for Eldar.
Warlocks : "Embolden: The Warlock instills an unshakeable courage in his comrades, reaching into their minds with visions of mighty heroes and great victories. The Warlock and his squad may re-roll any failed Leadership tests." Eldar Codex, page 28, warlock powers.
"To use a psychic power successfully the psyker must pass a Psychic test, which is a normal Leadership test." 40K Core rules, Page 50, Psychers.
Letter of the rule, there is an argument that one might re-roll failed psychic tests. A Psychic test is a Leadership test, and one may reroll Leadership tests. If one looks at the fluff before the Embolden rule, I am very dubious that this would be the intent of the rule, but some claim "the fluff means nothing". I have never used Embolden to justify re-rolled Psychic tests, and don't really intend to start, but am curious as to what folks think.