There are a lot of Yakko's World videos on YouTube so here's a less popular but equally impressive performance.
This is found on Animaniacs Vol. 3 as a cold opening and segway between segments. Again, I would highly recommend purchasing these DVDs, a very good buy for the young and the young at heart!
Update: I recently got an offer to be made a YouTube partner because of the high view count on this video...thanks everyone! I mean, I'm not gonna do it because then they would probably realize that this video is illegal, but it's nice to get the offer :)
Aardvark, abating, abet, abdicating
Abandon, abase and abreast
Ablaze and ablution, abhor and abusion
Abbreviate, abbey, abscessed.
Abduct and ablation, abridge and abrasion
Abash and abrupt and abride
Abscond and absentia, absinthe, abstentia
Abdomen, ably, abide.
Abominable, abrogate, absolute, absent
Absorbent, abstention, abstraction
Absurd and abundant, abusive, abutment
Acacia, academy, action.
Accede and accost and accept and across
And accompany, acre, accord
Accomplish, account and accrue and amount
Acrimonious, active, adored.
Adrenaline, adulate, adder and advocate
Advertise, adverse, abrade
Advice, adversarial, advent and aerial
Affluent, after, afraid.
Level and levity, lewd and longevity
Libel, libation, Lanai
Lithium, litigate, legal, legitimate
Liberty, levy and lie.
*mistake at the f-words*
Facial and faction and fractal and fraction
And fraudulent, fragrant, frappé
Frankincense, frankish and frakisish, frashhh...
Shoot! Yada yada flambé!
Libation and libertine, limited, limousine
Limpid and limbo and lime
Lima and lipid and literature, liquid
And listing and liter and line.
There's lobby and loading and loathsome and loaning
And logo and then locomotion
There's lotus and lottery, lobo, lobotomy
Logic and loosen and lotion.
Lozenge and lubber and lucky and lover
And lullaby, lumber and luke
Luster and luscious and lunatic, lustrous
And lurking and lunar and lute.
Zachary, Zanzibar, zappy and zamindar
Zillion and ZIP code and Zen
Zany and zoning and zeal and zirconium
Zodiac, zombie, ze-in.
Zigging and zagging and zealous and zebra
And zenith and zap and zaffer
Zeppelin and zipper and zephyr and zither
Then zinc and zombini
And zoo and zucchini
And Zulu and Zorro
Then zit and zamoro
And zero and zoom and... Zaire!