[Droid Eris Q&A, Help & Troubleshooting] kickore:
Sorry it took a minute.

Here's what the MTD inspect gave me.

Eris MTD Partition Status Report Generated on Fri May 18 22:11:36 UTC 2012

PARTITION DEVICE_NAME SIZE(Bytes) BAD_BLOCKS #_E-BLKS ECC_FAIL ECC_CORR BBT_BLOCKS

misc /dev/mtd/mtd0 655360 0 5 0 0 0
recovery /dev/mtd/mtd1 5242880 0 40 0 0 0
boot /dev/mtd/mtd2 2621440 20 20 0 0 0
system /dev/mtd/mtd3 178257920 1350 1360 0 0 0
cache /dev/mtd/mtd4 136314880 9 1040 18 0 0
userdata /dev/mtd/mtd5 167247872 1 1276 0 0 0

#################################### misc PARTITION ###################################

Partition Symbolic Name: misc
Partition (character-special) Device: /dev/mtd/mtd0
Partition Total Size: 655360
Partition EraseBlock Size: 131072
ECC failed: 0
ECC corrected: 0
Number of bad blocks: 0
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...

#################################### recovery PARTITION ###################################

Partition Symbolic Name: recovery
Partition (character-special) Device: /dev/mtd/mtd1
Partition Total Size: 5242880
Partition EraseBlock Size: 131072
ECC failed: 0
ECC corrected: 0
Number of bad blocks: 0
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...

#################################### boot PARTITION ###################################

Partition Symbolic Name: boot
Partition (character-special) Device: /dev/mtd/mtd2
Partition Total Size: 2621440
Partition EraseBlock Size: 131072
ECC failed: 0
ECC corrected: 0
Number of bad blocks: 20
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...
ECC: 1 uncorrectable bitflip(s) at offset 0x00000000
ECC: 1 uncorrectable bitflip(s) at offset 0x00000800

#################################### system PARTITION ###################################

Partition Symbolic Name: system
Partition (character-special) Device: /dev/mtd/mtd3
Partition Total Size: 178257920
Partition EraseBlock Size: 131072
ECC failed: 0
ECC corrected: 0
Number of bad blocks: 1350
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...
ECC: 1 uncorrectable bitflip(s) at offset 0x00000000
ECC: 1 uncorrectable bitflip(s) at offset 0x00000800

#################################### cache PARTITION ###################################

Partition Symbolic Name: cache
Partition (character-special) Device: /dev/mtd/mtd4
Partition Total Size: 136314880
Partition EraseBlock Size: 131072
ECC failed: 18
ECC corrected: 0
Number of bad blocks: 9
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...
ECC: 1 uncorrectable bitflip(s) at offset 0x00000000
ECC: 1 uncorrectable bitflip(s) at offset 0x00000800

#################################### userdata PARTITION ###################################

Partition Symbolic Name: userdata
Partition (character-special) Device: /dev/mtd/mtd5
Partition Total Size: 167247872
Partition EraseBlock Size: 131072
ECC failed: 0
ECC corrected: 0
Number of bad blocks: 1
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 0
Dumping data starting at 0x00000000 and ending at 0x00001000...

Apparently, I have a few.