Gai Shishioh of GaoGaiGar announces all of his attacks in this way to some degree. But when it's time to really bring out the epic, there's only one thing to say: "HIKARI! NI!NAAAAAAAAAAAAAREEEEEEEEEEEE!!!!!!" (Translatable as "BE! COME!LIIIIIIIIIIGHT!!!!" And then the hammer comes down).
Used in the finale of Death Note: Near, finally starting to sound bitter in his confrontation with Light, makes liberal use of periods to make his deduction nice and clear. "Light Yagami... You. Are. Kira."
I! AM! JUSTICE!
SAKUJO! SAKUJO! SAKUJO!
MACH GO! GO! GO! in the original Japanese version of Speed Racer.
In Haiyore! Nyarko-san, Mahiro is disgusted by the "chicken" that Nyarko serves him. She offers to make him a BLT sandwich the next day and then starts striking Sentai-like poses that form the letters and shouting B! L! T!. Which unfortunately stands for Byakhee-Lloigor-Tsathougga.