In terms of tone, some RPGs read like dry old college professors. Others are warm and engaging. Some read like a drill sergeant, and other like a guy earnestly reading his bad poetry to a Friday-night cafe crowd.
Palladium's books read like the two most excited wrestling announcers in the world witnessing a zero-gravity caged death match when a guy with a chain saw bursts up through the mat and one of the wrestler's managers rampages into the ring riding a grizzly bear. Also, there is a laser light show going on.
And perhaps more than anything, that is the reason I love Palladium Fantasy and Rifts in the manner in which I do. Kevin S., the dear, departed Erick Wujcik, and many of the others through the years conveyed an almost "can you believe this?" sense of excitement throughout their books. And when a company is excited about the product they're putting out, I am, too. I hate when companies make a product and make it feel like they're just filling in the blanks for different niches or requirements. (Latter-era D&D 3.5 was especially bad about this--little passion, subdued writing--nothing but the base requirements so that would have this type of caster, this race, or this prestige class).
Whether it is breathlessly describing the exact number of demons killed in a battle (743), or becoming so excited about the damage of a weapon it must be expressed in italics and multiple exclamation points (4d6x4 S.D.C.!!!), or assuming that each idea presented is a veritable gaming revelation, Palladium tends to write their books with a fervor usually reserved for religious dissidents. Palladium Fantasy basically says, "Look, this crap is amazingly fun. Here's some charts, here's some classes, here's 5 types of magic, and unlike Russell in your last gaming group, we think it would KICK ASS if you played an Ogre who worships Thoth and wants a Souldrinker Runesword. Now let's go to the Isle of the Cyclops and see about buying some Lightning Weaponry!"
To be sure, there's little subtlety in the approach, and I suppose that tone could get on the nerves of some. It's also very easy to mock, as anyone who's ever gone within three links of RPGnet will tell you. But I find it utterly charming, and part of the best asset Palladium has--crazy-ass, fantastical ideas, put forth with nary a shred of restraint or moderation.
She may not be the prettiest girl in the bar, but Palladium is a tigress in the sack.