Sure, Jen. In no particular order:
- Bottle Rockets - The Brooklyn Side. The Bottle Rockets are the band most like Uncle Tupelo with their breakneck switchback from lyric country to ZZ Top-style guitar crunch. This album is easily their best, too.
- Richard Buckner - Bloomed. Buckner's a brilliant lyricist, possibly the best of this bunch. This is his first album, a quiet affair that sounds like Lubbock, TX.
- The Meat Puppets II. The MPs were a punk band that dabbled in everything. This one has a profound country influence that opened the field for cowpunk.
- The Jayhawks - Hollywood Town Hall & Tomorrow The Green Grass. The only two Jayhawks albums worth having, these share lovely Band-like harmonies (I didn't mention The Band - get the self-titled album) and songs that are so great that you will swear on your first listen that you've known them all your life.
- Marlee MacLeod - Favorite Ball & Chain. Marlee's a talented songwriter. She drags a bit, here and there, but her high points stick with you. She's more folk-rock than folk-country.
- Victoria Williams - Loose. The loopiest of all alt-country albums. You never know what Victoria's going to do next.
- Wilco - AM. Very Tupeloesque with songs that distill much of the later UT sounds down to fine points. All later Wilco albums (which are even better, IMO, point towards experimental indiepop).
- Son Volt - Trace. The only good Son Volt album, full of great songs and as fine-pointed as AM. The later albums are pale rehashes.
- Michelle Shocked - Arkansas Traveler. A who's who of alt-country circa 1994.
- Lambchop - Nixon. Chamber alt-country. There's, like, 11-12 members of this band, and their sound is as lush as it is twangy.
- Vic Chesnutt - The Salesman & Bernadette (or any of his albums, really). Vic's a weirdo like Victoria Williams. Lambchop backs him up on this.
- Jack Logan - Mood Elevator. Vic's buddy writes rockin' songs that sound simple and rootsy, but are full of strange changes and smart lyrics.
- Palace - Viva Last Blues (but really anything with Palace in the name of the band [e.g. Palace Brothers, Palace Music] or Will Oldham or Bonnie Prince Billy). You can't go wrong with Palace/Oldham. He's usually very spare in arrangement and whispery in vocals, but he can be the exact opposite, too.
- Tarnation - Gentle Creatures. The most haunting voice in alt-country. If David Lynch directed Deliverance.
- Neko Case - Blacklisted. Voice like a bell. Or maybe a bullhorn. On the western side of the equation.
- The Meat Purveyors - All Relationships Are Doomed to Fail. Bluegrassy and ballsy. Includes a cover of Ratt's "Round & Round" that makes it sound like a Scruggs & Flatt tune.
- Giant Sand - Chore of Enchantment. Almost Neil Young.
- Calexico - The Black Light. This is strange stuff, part country, part rock, and part mariachi. Sometimes quiet and sometimes swinging. One of the most interesting bands around.
- Freakwater - Old Paint. A couple of guitars, bass, and steel. The harmonies are Carter Family-rough, and the songs Carter Family-beautiful.
- Rank & File - Sundown. Early cowpunk.
- Alejandro Escovado - Gravity. Direct and full of pleasant subtle flourishes.
- Gram Parsons - GP/Grievous Angel. Where it all began.
- The Flying Burrito Brothers - Gilded Palace of Sin. No, I'm sorry. This is where it all began.
- Dillard & Clark - Fantastic Expedition. Oops. This is where it all began.
- Townes Van Zandt - High, Low, and In Between. Maybe this is where it all began.
- Jason & the Scorchers - Lost & Found. Cowpunk meets Commercial-friendly.
- The Scud Mountain Boys - Massachusetts. Purty. They sad.
- The Waco Brothers - Electric Waco Chair. Raucous.
- Any compilation on Bloodshot Records. Yep.
- Sally Timms - Cowboy Sally's Twilight Laments for Lost Buckaroos. The prettiest voice in punk playing country.
- Jon Rauhouse's Steel Guitar Air Show. Western swing featuring some of the other greats of alt-country.
- The Pine Valley Cosmonauts - The Executioner's Last Songs. The menu approach.
- The Mekons - Fear & Whiskey. Country music deconstruction.
I'm sure I could come up with more if you want.