Love them or hate them, daily quests have become a staple in WoW. In The Burning Crusade, you had your cooking, fishing, daily dungeons, Sha'tari Skyguard and the Shattered Sun dailies (toward the end of BC). In Wrath of the Lich King, you had profession, dungeon, faction-specific dailies and the Argent Tournament. You could do all 25 dailies and still have a handful you weren't able to complete.
In Wrath, I made sure I always did my cooking and fishing dailies. I was determined to get one of the rare fishing poles (which I still have yet to get, by the way). I also did one faction at a time until I was exalted. When the Argent Tournament was introduced, that became my first stop of the day. I would start at the tournament, move onto The Storm Peaks for the Sons of Hodir, back to Dalaran and then to Sholazar Basin to convince the Oracles that I needed a Green Proto-Drake. (Turns out the Oracles don't have any Green Proto-Drakes and the Mysterious Egg they sell is really just a scam.)
Do you follow a routine while you're in WoW? Do you have a route that you follow religiously, or do you pick your dailies at random each day?