Luxray - Mixed wallbreaker is great, Choice Bander is cool, too. Especially with Cresselia gone, there's very little he can't hurt. Intimidate is sweet, and a lot of people don't even realize he has Superpower now. Superpower does way more than Magmortar's Cross Chop, and it can deal with full health waters unlike Blaziken, Nidoking, and even Magmortar. Also, after intimidate, he can survive most unboosted physical attacks from a Rain sweeper, meaning he's an asset against Rain teams.
Tangrowth - Seems like there are none of these anymore. It's a nice physical wall that protects you from Azumarill, Feralgatr, Kabutops (!), and Swords Dance Venasaur, just to name some common things. It takes ~70% from a LO Kabutops +2 Stone Edge, which gives you an idea of how well it can wall neutral attacks. It also gets Synthesis and Leech Seed to help it's survivability. HUGE asset against rain, and capable of dealing with a lot of Physical attacks while attacking from whichever side of the spectrum you want.
Articuno - It's already rare, but I'm possibly the only person who runs it with 252 HP / 252 SpDef, so that's the set I'm vouching for here. Obviously you need spin support in a big way. It's typing isn't very good, but it's stats are high enough that it can still wall things like Lanturn and defensive Rotom. It's a dead stop to a lot of special attackers, and STAB on Ice is cool especially with all the Ground-type Stealth Rockers out there. It's bulky enough to survive a Fire Blast from LO Moltres (not that you'd want to stay in) just to give you an idea of it's bulk. I don't know how easy it is to fit on a team though... I use it on a team where it works great, but it may just be a specific niche. Some of you can probably vouch for this thing's effectiveness, though.
Also, about Lapras, what about Curse? That's definitely something it has over Feralgatr, and it can make better use of it's defenses. You can actually Lure and kill Raikou. If it's Life Orb, it will always die to LO + SR + boosted Aqua Tail + boosted Ice Shard, meaning you can Curse on the switch and win. If it uses Calm Mind, though, you will both probably die. Against the more popular lefties variants, you can survive two hits (at full health) and KO it with a twice boosted Aqua Tail followed by Ice Shard. Stealth Rock kinda messes this up, though, since you can't survive two hits from 75% health. You could pull it off with Water Absorb, though. Otherwise, Curse + Ice Shard just seems cool anyway. He can be EV'd to always survive a Thunderbolt and 2HKO with Avalance and Ice Shard, but running both really limits your coverage.