Unable to access multidimensional ndarray in a Series (regression)
``` python
import numpy as np
import pandas as pd

arr = np.array([[8,8],[9,9]])
s = pd.Series([3, arr])

s[1]
```

Results in

```
Exception                                 Traceback (most recent call last)
<ipython-input-34-88de191fe097> in <module>()
----> 1 s[1]

/usr/lib/python2.7/dist-packages/pandas/core/series.pyc in __getitem__(self, key)
    491             result = self.index.get_value(self, key)
    492             if isinstance(result, np.ndarray):
--> 493                 return self._constructor(result,index=[key]*len(result)).__finalize__(self)
    494             return result
    495         except InvalidIndexError:

/usr/lib/python2.7/dist-packages/pandas/core/series.pyc in __init__(self, data, index, dtype, name, copy, fastpath)
    218             else:
    219                 data = _sanitize_array(data, index, dtype, copy,
--> 220                                        raise_cast_failure=True)
    221 
    222                 data = SingleBlockManager(data, index, fastpath=True)

/usr/lib/python2.7/dist-packages/pandas/core/series.pyc in _sanitize_array(data, index, dtype, copy, raise_cast_failure)
   2598     elif subarr.ndim > 1:
   2599         if isinstance(data, pa.Array):
-> 2600             raise Exception('Data must be 1-dimensional')
   2601         else:
   2602             subarr = _asarray_tuplesafe(data, dtype=dtype)

Exception: Data must be 1-dimensional
```

It used to work and my older code stopped working. Do you have any suggestions for a workaround?
## INSTALLED VERSIONS

commit: None
python: 2.7.6.final.0
python-bits: 64
OS: Linux
OS-release: 3.12-1-amd64
machine: x86_64
processor: 
byteorder: little
LC_ALL: None
LANG: en_GB.UTF-8

pandas: 0.13.1
Cython: 0.20
numpy: 1.7.1
scipy: 0.12.0
statsmodels: 0.4.2
IPython: 1.2.1
sphinx: 1.2.1
patsy: None
scikits.timeseries: None
dateutil: 1.5
pytz: 2012c
bottleneck: None
tables: 2.4.0
numexpr: 2.2.2
matplotlib: 1.3.1
openpyxl: 1.7.0
xlrd: 0.9.2
xlwt: 0.7.5
xlsxwriter: None
sqlalchemy: None
lxml: 3.3.1
bs4: 4.2.1
html5lib: 0.999
bq: None
apiclient: None
